125-616: Northern Border or North Border may refer to: Mexico–United States border , the international border between Mexico and the United States Canada–United States border , the international border between Canada and the United States Northern Border (film) , a 1953 Mexican crime film Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with
250-430: A brine pool 3,300 feet (1,000 m) below the gulf's surface, with a circumference of 100 feet (30 m) and 12 feet (3.7 m) feet deep, which is four to five times saltier than the rest of the water. The first exploration of the site was unmanned, using Hercules and in 2015 a team of three used the deep-submergence vehicle Alvin . The site cannot sustain any kind of life other than bacteria , mussels with
375-582: A hypoxic dead zone that runs east–west along the Texas–Louisiana coastline. In July 2008, researchers reported that between 1985 and 2008, the area roughly doubled in size. It was 8,776 square miles (22,730 km ) in 2017, the largest ever recorded. Poor agricultural practices in the northern portion of the Gulf of Mexico have led to a tremendous increase of nitrogen and phosphorus in neighboring marine ecosystems, which has resulted in algae blooms and
500-480: A magnitude 6.0 earthquake occurred about 250 miles (400 km) west-southwest of Anna Maria, Florida . The quake was reportedly felt from Louisiana to Florida. There were no reports of damage or injuries. Items were knocked from shelves and seiches were observed in swimming pools in parts of Florida. The earthquake was described by the USGS as an intraplate earthquake , the largest and most widely felt recorded in
625-420: A symbiotic relationship , tube worms and certain kinds of shrimp . It has been called the "Jacuzzi of Despair". Because it is warmer than the surrounding water (65 °F or 18 °C compared to 39 °F or 4 °C), animals are attracted to it but cannot survive once they enter it. The Gulf of Mexico is 41 percent continental slope , 32 percent continental shelf , and 24 percent abyssal plain with
750-736: A U.S.–Mexico border shutdown could be expected following the COVID-19 public health emergency. According to HRW, the new rule introduced by the CDC overlooks the fact that the U.S. is obligated to protect refugees from return to conditions threatening prosecution, as per treaties. President Joe Biden's border executive plan as the COVID-19 restrictions – known as Title 42 – expired in May 2023. Under Title 42, which had been in effect since March 2020, many border crossers have been quickly deported to Mexico without
875-759: A chance for asylum. Gulf of Mexico The Gulf of Mexico ( Spanish : Golfo de México ) is an ocean basin and a marginal sea of the Atlantic Ocean , mostly surrounded by the North American continent. It is bounded on the northeast, north and northwest by the Gulf Coast of the United States ; on the southwest and south by the Mexican states of Tamaulipas , Veracruz , Tabasco , Campeche , Yucatán , and Quintana Roo ; and on
1000-494: A check for VEE. APHIS imposes similar testing and certification requirements on horses from other parts of the world but without the quarantine for VEE. These horses are held in quarantine—usually three days—or until tests are completed. Because the disease equine piroplasmosis (equine babesiosis ) is endemic in Mexico but not established in the U.S., transportation of horses from Mexico to the U.S. requires evaluation of horses for
1125-726: A documentary about the project, short videos and video updates during the expedition. Video footage from the ROV was an integral part of this outreach and used extensively in the Mystery Mardi Gras Shipwreck documentary. On July 30, 1942, the Robert E. Lee , captained by William C. Heath, was torpedoed by the German submarine U-166 . She was sailing southeast of the entrance to the Mississippi River when
1250-722: A great harbor the master pilot Miruelo knew of. Sometime during these two days, one of the five remaining ships was lost on the rugged coast, but nothing else is known of it. In 1697 French sailor Pierre Le Moyne d'Iberville was chosen by the Minister of Marine to lead an expedition to rediscover the mouth of the Mississippi River and to colonize Louisiana which the English coveted. D'Iberville's fleet sailed from Brest on October 24, 1698. On January 25, 1699, d'Iberville reached Santa Rosa Island near Pensacola founded by
1375-492: A lack of available oxygen. Occurrences of masculinization and estrogen suppression were observed as a result. An October 2007 study of the Atlantic croaker found a disproportioned sex ratio of 61% males to 39% females in hypoxic sites. This was compared with a 52% to 48% male-female ratio found in reference sites, showing an impairment of reproductive output for fish populations inhabiting hypoxic coastal zones. According to
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#17327723211631500-480: A large scale from many of the bays and sounds. Other important industries along the coast include shipping, petrochemical processing and storage, military use, paper manufacture, and tourism. The gulf's warm water temperature can feed powerful Atlantic hurricanes causing extensive human death and other destruction as happened with Hurricane Katrina in 2005. In the Atlantic, a hurricane will draw up cool water from
1625-527: A license to claim what is now the Gulf Coast of the United States, known as the Narváez expedition . The contract gave him one year to gather an army, leave Spain, be large enough to found at least two towns of 100 people each, and garrison two more fortresses anywhere along the coast. On April 7, 1528, they spotted land north of what is now Tampa Bay . They turned south and traveled for two days looking for
1750-459: A locked and crowded detention center cell in northern Mexico, with motives ranging from pending deportation to overcrowding and lack of access to drinking water. The border separating Mexico and the U.S. is the most frequently crossed international boundary in the world, with approximately 350 million legal crossings taking place annually. Border crossings take place by roads, pedestrian walkways, railroads and ferries. From west to east, below
1875-457: A negative image. There are around 11.5 million undocumented workers in the U.S. today, and 87% of undocumented immigrants have been living in the U.S. for more than 7 years. Local economies that develop on the Mexican side capitalize not only on available skills but also on available, usually discarded, materials. Small businesses trade in clothes that are purchased by the pound and cardboard from
2000-426: A negative test for EIA. Horses from Mexico must have a health certificate; pass negative tests for EIA, dourine, glanders, and EP at a USDA import center; and undergo precautionary treatments for external parasites at the port of entry. Horses from other Western Hemisphere countries must have the same tests as those from Mexico and, except for horses from Argentina , must be held in quarantine for at least seven days as
2125-574: A permanent cyclonic gyre in the Bay of Campeche, as well as anticyclonic gyres which are shed by the Loop Current and travel westward where they eventually dissipate. The Bay of Campeche constitutes a major arm of the Gulf of Mexico. Additionally, the gulf's shoreline is fringed by numerous bays and smaller inlets. Stream that empty into the gulf include the Mississippi River and the Rio Grande in
2250-544: A point 32 km (20 mi) south of the Gila River confluence. The border then follows a series of lines and parallels totaling 859 km (534 mi). First, it follows a straight line from the Colorado River to the intersection of the 31° 20′ parallel north and the 111th meridian west . It then proceeds eastwards along the 31° 20′ parallel north up to a meridian 161 km (100 mi) west of
2375-503: A result, the effect funneled more immigrants to their death even with the assistance of coyotes (smugglers). Not only has this approach caused fatalities throughout the U.S.–Mexico border, but it has even stirred up a nuisance for documented immigrants and American citizens. There has been general concern about the Border Patrol and other agencies abusing their authority by racial profiling and conducting unwarranted searches outside
2500-422: A serious threat to marine life and adjacent coastal wetlands and to the livelihoods of Gulf Coast shrimpers and fishermen. Coast Guard Rear Admiral Sally Brice O'Hare stated that the U.S. government will be "employing booms, skimmers, chemical dispersants and controlled burns" to combat the oil spill. By May 1 the oil spill cleanup efforts were underway but hampered by rough seas and the "tea like" consistency of
2625-474: A valid Merchant Mariner Document when traveling in conjunction with official maritime business; or a valid U.S. military identification card when traveling on official orders. In August 2015, Mexico began enforcing a rule that all foreign citizens that plan to stay in the country for more than seven days or are travelling on business will have to pay a 330 pesos ($ 21) fee and show their passport. When animals are imported from one country to another, there
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#17327723211632750-462: Is a list of the border city "twinnings"; cross-border municipalities connected by one or more legal border crossings. The total population of the borderlands—defined as those counties and municipios lining the border on either side—stands at some 12 million people. The San Ysidro Port of Entry is located between San Ysidro, California and Tijuana, Baja California . Approximately 50,000 vehicles and 25,000 pedestrians use this entry daily. In
2875-600: Is an international border separating Mexico and the United States , extending from the Pacific Ocean in the west to the Gulf of Mexico in the east. The border traverses a variety of terrains, ranging from urban areas to deserts. It is the most frequently crossed border in the world with approximately 350 million documented crossings annually. Illegal crossing of the border to enter the United States has caused
3000-469: Is by the means of "prevention through deterrence". Its primary goal is to completely prevent undocumented immigrants from entering the U.S. from Mexico rather than apprehending the unauthorized who are already in the country. As assertive as it was, "prevention through deterrence" was arguably unsuccessful, with a doubling in size of undocumented immigrants population during the two decades leading up to 2014. In order to effectively enforce border protection,
3125-498: Is half the typical 40- kilometer (25 mi ) thickness of continental crust. It was at this time that rifting first created a connection to the Pacific Ocean across central Mexico and later eastward to the Atlantic Ocean. This flooded the opening basin to create an enclosed marginal sea. The subsiding transitional crust was blanketed by the widespread deposition of Louann Salt and associated anhydrite evaporites . During
3250-484: Is paralleled by U.S. Border Patrol interior checkpoints on major roads generally between 40 and 121 km (25 and 75 mi) from the U.S. side of the border, and garitas generally within 50 km (31 mi) of the border on the Mexican side. There are an estimated half a million illegal entries into the U.S. each year. Border Patrol activity is concentrated around border cities such as San Diego and El Paso which have extensive border fencing. This means that
3375-581: Is recommended. Animals crossing the U.S.–Mexico border may have a country of origin other than the country where they present for inspection. Such animals include those from the U.S. that cross to Mexico and return, and animals from other countries that travel overland through Mexico or the U.S. before crossing the border. APHIS imposes precautions to keep out several equine diseases, including glanders , dourine , equine infectious anemia , equine piroplasmosis , Venezuelan equine encephalitis , and contagious equine metritis . APHIS also checks horses to prevent
3500-585: Is roughly oval in shape and is approximately 810 nautical miles (1,500 km; 930 mi) wide. Its floor consists of sedimentary rocks and recent sediments. It is connected to part of the Atlantic Ocean through the Straits of Florida between the U.S. and Cuba, and with the Caribbean Sea via the Yucatán Channel between Mexico and Cuba. Because of its narrow connection to the Atlantic Ocean,
3625-526: Is the possibility that diseases and parasites can move with them. Thus, most countries impose animal health regulations on the import of animals. Most animals imported to the U.S. must be accompanied by import permits obtained in advance from the U.S. Department of Agriculture 's Animal and Plant Health Inspection Service (APHIS) and/or health certification papers from the country of origin. Veterinary inspections are often required, and are available only at designated ports; advance contact with port veterinarians
3750-553: Is today California , Arizona , New Mexico , Utah , Nevada and parts of what is Colorado , Wyoming , Kansas , and Oklahoma . In addition, all disputes over Texas and the disputed territory between Rio Grande and Rio Nueces were abandoned. Five years later, the Gadsden Purchase completed the creation of the current U.S.–Mexico border. The purchase was initially to accommodate a planned railway right-of-way . These purchases left approximately 300,000 people living in
3875-419: Is widely disputed, and many historians doubt that it took place as described. In his letters, Vespucci described this trip, and once Juan de la Cosa returned to Spain, a famous world map was produced. In 1506 Hernán Cortés took part in the conquest of Hispaniola and Cuba, receiving a large estate of land and indigenous slaves for his effort. In 1510 he accompanied Diego Velázquez de Cuéllar , an aide of
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4000-591: The Deepwater Horizon oil platform, located in the Mississippi Canyon about 40 miles (64 km) off the Louisiana coast, suffered a catastrophic explosion ; it sank a day and a half later. It was in the process of being sealed with concrete for temporary abandonment, to avoid environmental problems. Although initial reports indicated that relatively little oil had leaked, by April 24 it
4125-731: The Appalachian Mountains . It was created by the collision of continental plates that formed Pangaea. As interpreted by Roy Van Arsdale and Randel T. Cox, this mountain range was breached in the late Cretaceous by the formation of the Mississippi Embayment . The rifting that created the basin was associated with zones of weakness within Pangaea, including sutures where the Laurentia , South American , and African plates collided to create it. First, there
4250-518: The Bureau of Ocean Energy Management, Regulation and Enforcement ) to help predict the potential impacts of future oil/gas explorations. Since 1979, the specimens have been deposited in the national collections of the National Museum of Natural History. The major environmental threats to the gulf are agricultural runoff and oil drilling . There are 27,000 abandoned oil and gas wells beneath
4375-534: The Chihuahuan and Sonoran deserts to the Colorado River Delta and San Diego–Tijuana , before reaching the Pacific Ocean. The Mexico–United States border extends 3,145 kilometers (1,954 miles), in addition to the maritime boundaries of 29 km (18 mi) into the Pacific Ocean and 19 km (12 mi) into the Gulf of Mexico . It is the tenth-longest border between two countries in
4500-471: The Customs and Border Protection , specifically the Border Patrol, 600 million dollars to implement and improve security. The U.S. government has invested many millions of dollars on border security , although this has not stopped undocumented immigration in the U.S. In June 2018, the U.S. government announced installation of facial recognition system for monitoring immigrant activities. The Border Patrol
4625-574: The Government Accountability Office released a report stating that the U.S. Border Patrol intercepted 61% of individuals illegally crossing the border in 2011, which translates to 208,813 individuals not apprehended. 85,827 of the 208,813 would go on to illegally enter the U.S., while the rest returned to Mexico and other Central American countries. The report also shows that the number of illegal border crossings has dropped. The apprehensions per (fiscal) year are shown in
4750-650: The Mardi Gras sank around the early 19th century about 35 mi (56 km) off the coast of Louisiana in 4,000 feet (1,200 m) of water. She is believed to have been a privateer or trader. The shipwreck, whose real identity remains a mystery, lay forgotten at the bottom of the sea until it was discovered in 2002 by an oilfield inspection crew working for the Okeanos Gas Gathering Company (OGGC). In 2007 an expedition led by Texas A&M University and funded by OGGC under an agreement with
4875-470: The Mexico–United States border crisis . It is one of two international borders that the United States has, the other being the northern Canada–United States border ; Mexico has two other borders: with Belize and with Guatemala . Four American states border Mexico: California , Arizona , New Mexico and Texas . One definition of Northern Mexico includes only the six Mexican states that border
5000-557: The National Response Center , the oil industry has thousands of minor accidents in the Gulf of Mexico every year. In June 1979, the Ixtoc I oil platform in the Bay of Campeche suffered a blowout leading to a catastrophic explosion, which resulted in a massive oil spill that continued for nine months before the well was finally capped. This was the largest oil spill in the Gulf of Mexico to date. On April 20, 2010,
5125-584: The Old World ; they also had reason to expect that this new land would have gold . All of this encouraged two further expeditions, the first in 1518 under the command of Juan de Grijalva , and the second in 1519 under the command of Hernán Cortés , which led to the Spanish exploration, military invasion, and ultimately settlement and colonization known as the Conquest of Mexico . Hernández did not live to see
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5250-483: The euphotic zone . This attracts fish, shrimp, and squid. River drainage and atmospheric fallout from industrial coastal cities also provide nutrients to the coastal zone. The Gulf Stream , a warm Atlantic Ocean current and one of the strongest ocean currents known, originates in the gulf as a continuation of the Caribbean Current –Yucatán Current– Loop Current system. Other circulation features include
5375-625: The El Paso-Juarez area, in effect transferring the land to the U.S.. By a treaty negotiated in 1963, Mexico regained most of this land in what became known as the Chamizal dispute and transferred 1.07 km (260 acres) in return to the U.S. Border treaties are jointly administered by the International Boundary and Water Commission (IBWC), which was established in 1889 to maintain the border, allocate river waters between
5500-546: The French commandant. The Gulf of Mexico's eastern, northern, and northwestern shores lie along the US states of Florida, Alabama, Mississippi, Louisiana, and Texas. The US portion of the coastline spans 1,680 miles (2,700 km), receiving water from 33 major rivers that drain 31 states and 2 Canadian provinces. The southwestern and southern shores lie along the Mexican states of Tamaulipas, Veracruz, Tabasco, Campeche, Yucatán, and
5625-629: The Gulf of Mexico did not exist. Before the Late Triassic, the area consisted of dry land, which included continental crust that now underlies Yucatán , within the middle of the supercontinent Pangaea . This land lay south of a continuous mountain range that extended from north-central Mexico, through the Marathon Uplift in west Texas and the Ouachita Mountains of Oklahoma , and to Alabama where it linked directly to
5750-516: The Gulf of Mexico. Instead, the Spanish sailed into the Caribbean around Cuba and Hispaniola . The first alleged European exploration of the Gulf of Mexico was by Amerigo Vespucci in 1497. Vespucci is purported to have followed the coastal land mass of Central America before returning to the Atlantic Ocean via the Straits of Florida between Florida and Cuba. However, this first voyage of 1497
5875-761: The Line in El Paso ; Operation Rio Grande in McAllen ; Operation Safeguard in Tucson ; and the Arizona Border Control Initiative along the Arizona border. According to Vulliamy, one in five Mexican nationals will visit or work in the U.S. at one point in their lifetime. As of 2010, the border is guarded by more than 20,000 Border Patrol agents, more than at any time in its history. The border
6000-405: The Mexican economy overall, 25% of it in the border regions. The U.S. Immigration Act of 1891 authorized the implementation of inspection stations at ports of entry along the Mexican and Canadian borders. The U.S. Immigration Act of 1917 required the passing of a literacy test and a head tax by Mexicans wanting to enter the U.S. legally; however, during World War I , when labor shortages grew,
6125-704: The Minerals Management Service (now BOEM ) was launched to undertake the deepest scientific archaeological excavation ever attempted at that time to study the site on the seafloor and recover artifacts for eventual public display in the Louisiana State Museum . As part of the project educational outreach Nautilus Productions in partnership with BOEM, Texas A&M University, the Florida Public Archaeology Network and Veolia Environmental produced
6250-481: The Padre Island treasure. This loss, in combination with other ship disasters around the Gulf of Mexico, gave rise to a plan for establishing a settlement on the northern Gulf Coast to protect shipping and more quickly rescue castaways. As a result, the expedition of Tristán de Luna y Arellano was sent and landed at Pensacola Bay on August 15, 1559. On December 11, 1526, Charles V granted Pánfilo de Narváez
6375-400: The Rio Grande under the 1905 convention, which occurred on 37 different dates from 1910 to 1976, the transferred land was small (ranging from one to 646 acres) and uninhabited. The Rio Grande Rectification Treaty of 1933 straightened and stabilized the river boundary through the highly developed El Paso-Juárez valley. Numerous parcels of land were transferred between the two countries during
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#17327723211636500-530: The Spanish; he sailed from there to Mobile Bay and explored Massacre Island, later renamed Dauphin Island . He cast anchor between Cat Island and Ship Island ; and on February 13 he went to the mainland, Biloxi , with his brother Jean-Baptiste Le Moyne de Bienville . On May 1 he completed Fort Maurepas on the northeast side of the Bay of Biloxi. On May 4 d'Iberville sailed for France leaving his teenage brother, Jean-Baptiste Le Moyne , as second in command to
6625-423: The U.S. Federal Bureau of Investigation to monitor suspicious activities and potential violence at the border. Within 10 years, frequent provocations caused border towns to transform into battlefields, which intensified transborder restrictions, brought federal soldiers to patrol the border, and caused the construction of fences and barriers between border towns. When the battles concluded, restrictions for crossing
6750-466: The U.S. Some items, like the used tires found everywhere along the border, are made into certain items that support local economies and define a border. The Secure Fence Act of 2006 was passed providing for the construction of 1,127 km (700 mi) of high-security fencing. Attempts to complete the construction of the Mexico–United States barrier have been challenged by the Mexican government and various U.S.–based organizations. In January 2013,
6875-413: The U.S. and the Mexican government's support for financial investments from the U.S. Railroads were built that connected the northern Mexican states more to the U.S. than to Mexico, and the population grew tremendously. The mining industry also developed, as did the U.S.'s control of it. By the early 20th century companies from the U.S. controlled 81% of the mining industry and had invested US$ 500 million in
7000-568: The U.S. by air: a valid passport ; a passport card ; a state enhanced driver's license or state enhanced non-driver ID card (available in Michigan , New York , Vermont , and Washington ) approved by the Secretary of Homeland Security; a trusted traveler program card ( Global Entry , NEXUS , FAST , or SENTRI ); an enhanced tribal identification card; a Native American Tribal Photo Identification Card; Form I-872 – American Indian Card;
7125-404: The U.S. ceded 6 islands in the Rio Grande to Mexico. At the same time, Mexico ceded 3 islands and 2 bancos to the U.S. This transfer, which had been pending for 20 years, was the first application of Article III of the 1970 Boundary Treaty. On March 27, 2023, at least 38 detained migrants (mostly from Central America) were killed—and dozens more injured—in a fire started in protest inside
7250-401: The U.S. settled all outstanding boundary disputes and uncertainties related to the Rio Grande border. The U.S. states along the border, from west to east, are California , Arizona , New Mexico , and Texas . The Mexican states along the border are Baja California , Sonora , Chihuahua , Coahuila , Nuevo León , and Tamaulipas . Among the U.S. states, Texas has the longest stretch of
7375-488: The U.S. was between 1909 and 1911 in California, the first barrier built by Mexico was likely in 1918; barriers were extended in the 1920s and 1940s. The Banco Convention of 1905 between the U.S. and Mexico allowed, in the event of sudden changes in the course of the Rio Grande (as by flooding), for the border to be altered to follow the new course. The sudden changes often created bancos (land surrounded by bends in
7500-412: The U.S.' policies and regulations have looked to make border crossings more hazardous through the implementation of various operations, one of those being the "funnel effect". The tactic was meant to discourage migration from Mexico into the U.S. by forcing migrants to travel further around barriers where the terrain and weather are more risky, but the strategy was not as successful as initially planned. As
7625-440: The U.S., I-5 crosses directly to Tijuana, and the highway's southern terminus is this crossing. In 2005, more than 17 million vehicles and 50 million people entered the U.S. through San Ysidro . Among those who enter the U.S. through San Ysidro are transfronterizos , American citizens who live in Mexico and attend school in the U.S. It has influenced the every day lifestyle of people that live in these border towns . Along
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#17327723211637750-431: The U.S., 90% were from Mexico alone. In addition, there are more than 6 million undocumented Mexican nationals residing in the U.S. The border has a very high rate of documented and undocumented migrant crossings every year. With such a high rate of people crossing annually to the U.S., the country has invested in several distinct security measures. In 2010, President Barack Obama signed an appropriation bill which gave
7875-521: The U.S.: Baja California , Chihuahua , Coahuila , Nuevo León , Sonora and Tamaulipas . It is the tenth-longest border between two countries in the world. The total length of the continental border is 3,145 kilometers (1,954 miles). From the Gulf of Mexico, it follows the course of the Rio Grande (Río Bravo del Norte) to the border crossing at Ciudad Juárez, Chihuahua , and El Paso, Texas . Westward from El Paso–Juárez , it crosses vast tracts of
8000-544: The United States of America and the Republic of Cuba, of December 16, 1977. Mexico and United States: Treaty to resolve pending boundary differences and maintain the Rio Grande and Colorado River as the international boundary, of November 23, 1970; Treaty on maritime boundaries between the United States of America and the United Mexican States (Caribbean Sea and Pacific Ocean), of May 4, 1978, and treaty on
8125-576: The United States' total production. The International Hydrographic Organization defines the southeast limit of the Gulf of Mexico as: A line joining Cape Catoche Light ( 21°37′N 87°04′W / 21.617°N 87.067°W / 21.617; -87.067 ) with the Light on Cape San Antonio in Cuba, through this island to the meridian of 83°W and to the Northward along this meridian to
8250-612: The United States, in accordance with Mexico's domestic legislation. On March 13, 2009, the CLCS accepted Mexico's arguments for extending its continental shelf up to 350 nautical miles (650 km; 400 mi) into the Western Polygon. Since this would extend Mexico's continental shelf well into territory claimed by the United States, however, Mexico and the U.S. would need to enter a bilateral agreement based on international law that delimits their respective claims. A ship now called
8375-768: The attack. One officer, nine crewmen and 15 passengers were lost. The passengers aboard Robert E. Lee were primarily survivors of previous torpedo attacks by German U-boats. The wreck's location was discovered during the C & C Marine survey that located the U-166 . In 2001 the wreck of U-166 was found in 5,000 feet (1,500 m) of water, less than two miles (3.2 km) from where it had attacked Robert E. Lee . Various biota include chemosynthetic communities near cold seeps and non chemosynthetic communities such as bacteria and other micro- benthos , meiofauna , macrofauna , and megafauna (larger organisms such as crabs , sea pens , crinoids , demersal fish , cetaceans , and
8500-568: The basin expanded and deepened. Later, loading of the crust within the basin and adjacent coastal plain by the accumulation of kilometers of sediments during the rest of the Mesozoic and all of the Cenozoic further depressed the underlying crust to its current position about 10–20 km (6.2–12.4 mi) below sea level. Particularly during the Cenozoic, a time of relative stability for
8625-421: The basin experienced a period of cooling and subsidence of the crust underlying it. The subsidence was the result of a combination of crustal stretching, cooling, and loading. Initially, the combination of crustal stretching and cooling caused about 5–7 km (3.1–4.3 mi) of tectonic subsidence of the central thin transitional and oceanic crust. Because subsidence occurred faster than sediment could fill it,
8750-401: The border every day is causing air pollution in San Ysidro and Tijuana. The emission of carbon monoxide (CO) and other vehicle related air contaminants have been linked to health complications such as cardiovascular disease, lung cancer, birth outcomes, premature death, obesity, asthma and other respiratory diseases. The high levels of traffic collusion and the extended wait times has affected
8875-503: The border regions reflected this. As the infrastructure of communities on the U.S. side continued to improve, the Mexican side began to fall behind in the construction and maintenance of important transportation networks and systems necessary to municipal development. Although the Mexican Revolution caused insecurity in Mexico, it also strained U.S.–Mexico relations. With the Mexican Revolution lasting for 10 years, ending in 1920, and World War I simultaneously occurring between 1914 and 1918,
9000-420: The border was reaffirmed in the 1828 Treaty of Limits . Mexico attempted to create a buffer zone at the border that would prevent possible invasion from the north. The Mexican government encouraged thousands of their own citizens to settle in the region that is now known as Texas and even offered inexpensive land to settlers from the U.S. in exchange for populating the area. The influx of people did not provide
9125-489: The border were relaxed and most soldiers were sent home; however, the fences remained as a physical reminder of the division between the two nations. As years passed, more fences and higher barriers were established as attentions focused on the boundary demarcation between the U.S. and Mexico. The first international bridge was the Brownsville & Matamoros International Bridge built in 1910. The first barrier built by
9250-467: The border with Mexico, while California has the shortest. Among the states in Mexico, Chihuahua has the longest border with the U.S., while Nuevo León has the shortest. Along the border are 23 U.S. counties and 39 Mexican municipalities . In the mid-16th century, after the discovery of silver, settlers from various countries and backgrounds began to arrive in the area. This period of sparse settlement included colonizers from different backgrounds. The area
9375-405: The border, according to Mexican political scientist Armand Peschard-Sverdrup . The economic development of the border region on the Mexican side of the border depended largely on its proximity to the U.S., because of its remoteness from commercial centers in Mexico. During the years of Mexican President Porfirio Díaz , between 1876 and 1910, the border communities boomed because of close ties to
9500-551: The coast of Baja California, there are neighborhoods of Americans living in Tijuana, Rosarito Beach , and Ensenada , whose residents commute to the U.S. daily to work. Additionally, many Mexicans also enter the U.S. to commute daily to work. In 1999, 7.6% of the labor force of Tijuana was employed in San Diego. The average wait time to cross into the U.S. is approximately an hour. The thousands of vehicles that transit through
9625-476: The coast, most notably at the Florida and Yucatán Peninsulas. The shelf is exploited for its oil by means of offshore drilling rigs, most of which are situated in the western gulf and in the Bay of Campeche. Another important commercial activity is fishing; major catches include red snapper , amberjack , tilefish , swordfish , and various grouper , as well as shrimp and crabs. Oysters are also harvested on
9750-432: The coastal zones, thick clastic wedges built out the continental shelf along the northwestern and northern margins of the basin. To the east, the stable Florida Platform was not covered by the sea until the latest Jurassic or the beginning of Cretaceous time. The Yucatán Platform was emergent until the mid-Cretaceous. After both platforms were submerged, the formation of carbonates and evaporites has characterized
9875-491: The construction period, 1935–1938. At the end, each nation had ceded an equal area of land to the other. The Boundary Treaty of 1970 transferred an area of Mexican territory to the U.S., near Presidio and Hidalgo, Texas , to build flood control channels. In exchange, the U.S. ceded other land to Mexico, including five parcels near Presidio, the Horcon Tract and Beaver Island near Roma, Texas . On November 24, 2009,
10000-418: The continuation of his work: he died in 1517, the year of his expedition, as the result of the injuries and the extreme thirst suffered during the voyage, and disappointed in the knowledge that Diego Velázquez had given precedence to Grijalva as the captain of the next expedition to Yucatán. In 1523, a treasure ship was wrecked en route at Padre Island , Texas. When word of the disaster reached Mexico City,
10125-671: The defense that Mexico had hoped for and instead Texas declared its independence in 1836, which lasted until 1845 when the U.S. annexed it. The constant conflicts in the Texas region in the mid-19th century eventually led to the Mexican–American War , which began in 1846 and ended in 1848 with the Treaty of Guadalupe Hidalgo . In the terms of the peace treaty, Mexico lost more than 2,500,000 square kilometers (970,000 sq mi) of land, 55% of its territory, including all of what
10250-662: The delimitation of the continental shelf in the western Gulf of Mexico beyond 200 nautical miles (370 km; 230 mi), of June 9, 2000. On December 13, 2007, Mexico submitted information to the Commission on the Limits of the Continental Shelf (CLCS) regarding the extension of Mexico's continental shelf beyond 200 nautical miles. Mexico sought an extension of its continental shelf in the Western Polygon based on international law, UNCLOS, and bilateral treaties with
10375-401: The depths and making it less likely that further hurricanes will follow in its wake (warm water being one of the preconditions necessary for their formation). However, the gulf is shallower; when a hurricane passes over the water temperature may drop but it soon rebounds and becomes capable of supporting another tropical storm. From 1970 to 2020, surface temperatures warmed at approximately twice
10500-508: The division between the U.S. and Mexico began to polarize the two nations. Constant battles and raids along the border made both authorities nervous about borderland security. The Zimmerman Telegram , a diplomatic cable sent by Germany but intercepted and decrypted by British intelligence, was meant to bait Mexico into war with the U.S. in order to reconquer what was taken from them during the Mexican-American War. This inspired
10625-476: The exception of the 40 km (25 mi) border zone, but still within the 161 km (100 mi) border zone. In 2012, Border Patrol agents made over 364,000 arrests of people illegally entering the country. Considerable success has been achieved in restoring integrity and safety to the border, by putting in place a border-control strategy. These include Operation Gatekeeper in San Diego ; Operation Hold
10750-472: The explosion destroyed the #3 hold, vented through the B and C decks and damaged the engines, the radio compartment and the steering gear. After the attack she was under escort by USS PC-566 , captained by Lieutenant Commander Herbert G. Claudius, en route to New Orleans . PC-566 began dropping depth charges on a sonar contact, sinking U-166 . The badly damaged Robert E. Lee first listed to port then to starboard and finally sank within about 15 minutes of
10875-542: The extinct Caribbean monk seal ) are living in the Gulf of Mexico. Recently, resident Bryde's whales within the gulf were classified as an endemic, unique subspecies and making them as one of the most endangered whales in the world. The Gulf of Mexico yields more fish, shrimp, and shellfish annually than the south and mid-Atlantic , Chesapeake , and New England areas combined. The Smithsonian Institution Gulf of Mexico holdings are expected to provide an important baseline of understanding for future scientific studies on
11000-472: The flow of illegal immigrants is diverted into rural mountainous and desert areas, leading to several hundred migrant deaths along the Mexico–U.S. border of those attempting to cross into the U.S. from Mexico illegally and vice versa. Undocumented labor contributes $ 395 billion to the economy every year. While the U.S. is in favor of immigration, the increase in undocumented immigration has given border-crossing
11125-552: The geologic history of these two stable areas. Most of the basin was rimmed during the early Cretaceous by carbonate platforms, and its western flank was involved during the latest Cretaceous and early Paleogene periods in a compressive deformation episode, the Laramide Orogeny , which created the Sierra Madre Oriental of eastern Mexico. In 2014, Erik Cordes of Temple University and others discovered
11250-583: The governor of Hispaniola, in his expedition to conquer Cuba. In 1518 Velázquez put him in command of an expedition to explore and secure the interior of Mexico for colonization. In 1517 Francisco Hernández de Córdoba discovered the Yucatán Peninsula. This was the first European encounter with an advanced civilization in the Americas , with solidly built buildings and a complex social organization which they recognized as being comparable to those of
11375-429: The graph; they reached a maximum of over 1.643 million in the year 2000. Similar numbers had been reached in 1986 with over 1.615 million. The increase of border security throughout the years has progressively made crossings at the U.S.–Mexico border more dangerous, which has developed a human rights crisis at the border. The number of migrant deaths occurring along the U.S.–Mexico border has dramatically increased since
11500-639: The greatest depth of 12,467 feet in the Sigsbee Deep . Seven main areas are given as: As early as the Maya civilization , the Gulf of Mexico was used as a trade route off the coast of the Yucatán Peninsula and present-day Veracruz . Although the Spanish voyage of Christopher Columbus was credited with the discovery of the Americas by Europeans, the ships in his four voyages did not reach
11625-429: The gulf experiences very small tidal ranges . The size of the gulf basin is approximately 1.6 million km (620,000 sq mi). Almost half of the basin consists of shallow continental shelf waters. The volume of water in the basin is roughly 2.4 × 10 cubic kilometers (5.8 × 10 cubic miles). The gulf is one of the most important offshore petroleum production regions in the world, making up one-sixth of
11750-499: The gulf's first such study estimated concentrations that rival the highest globally reported. There are frequent " red tide " algae blooms that kill fish and marine mammals and cause respiratory problems in humans and some domestic animals when the blooms reach close to shore. This has especially been plaguing the southwest and southern Florida coast, from the Florida Keys to north of Pasco County, Florida . The gulf contains
11875-523: The gulf. These have generally not been checked for potential environmental problems. In 1973 the United States Environmental Protection Agency prohibited the dumping of undiluted chemical waste by manufacturing interests into the gulf, and the military confessed to similar behavior in waters off Horn Island . Microplastics within semi-enclosed seas like the gulf have been reported in high concentrations, and
12000-486: The impact of the Deepwater Horizon oil spill . In Congressional testimony, Dr. Jonathan Coddington, associate director of Research and Collections at the Smithsonian's National Museum of Natural History , provides a detailed overview of the Gulf collections and their sources which Museum staff have made available on an online map. The samples were collected for years by the former Minerals Management Service (renamed
12125-576: The implementation of the funnel effect. Along the Arizona-Mexico border, only seven migrant deaths were recorded in 1996; however, the remains of over 2,000 migrants were discovered from 2001 to 2012. Since the majority of deaths occur in rural areas, where extreme temperatures are common, it is likely the number of recorded deaths are far below the total. Because of the harsh, inaccessible terrain, human remains may not be found for years or ever. The Human Rights Watch cited on April 22, 2020, that
12250-489: The introduction of ticks and other parasites. In the Lower Rio Grande Valley, U.S. Department of Agriculture inspectors look for horses and livestock that stray across the border carrying ticks. These animals are often called wetstock, and the inspectors are referred to as tickriders. Per APHIS, horses originating from Canada can enter the U.S. with a Canadian government veterinary health certificate and
12375-478: The late Jurassic, continued rifting widened the basin and progressed to the point that seafloor spreading and formation of oceanic crust occurred. At this point, sufficient circulation with the Atlantic Ocean was established that the deposition of Louann Salt ceased. Seafloor spreading stopped at the end of the Jurassic, about 145–150 million years ago. During the late Jurassic through early Cretaceous,
12500-513: The latitude of the South point of the Dry Tortugas (24°35'N), along this parallel Eastward to Rebecca Shoal (82°35'W) thence through the shoals and Florida Keys to the mainland at the eastern end of Florida Bay and all the narrow waters between the Dry Tortugas and the mainland being considered to be within the Gulf. The consensus among geologists is that before the late Triassic ,
12625-419: The mental health, stress levels, and aggressive behavior of the people who cross frequently. The San Ysidro border is heavily policed, separated by three walls, border patrol agents and the U.S. Immigration and Customs Enforcement . Tijuana is the next target for San Diegan developers because of its fast-growing economy, lower cost of living, cheap prices and proximity to San Diego. While this would benefit
12750-458: The northern gulf, and the Grijalva and Usumacinta rivers in the southern gulf. The land that forms the gulf's coast, including many long, narrow barrier islands, is almost uniformly low-lying and is characterized by marshes and swamps as well as stretches of sandy beach. The Gulf of Mexico is an excellent example of a passive margin . The continental shelf is quite wide at most points along
12875-416: The northernmost tip of Quintana Roo. The Mexican coastline spans 1,743 miles (2,805 km). On its southeast quadrant, the gulf is bordered by Cuba. It supports major American, Mexican and Cuban fishing industries. The outer margins of the wide continental shelves of Yucatán and Florida receive cooler, nutrient-enriched waters from the deep by a process known as upwelling , which stimulates plankton growth in
13000-462: The oil. Cleanup operations were resumed after conditions became favorable. On May 27 the USGS had revised the estimate of the leak from 5,000 barrels per day (790 m /d) to 12,000–19,000 barrels per day (3,000 m /d) an increase from earlier estimates. On July 15 BP announced that the leak had stopped for the first time in 88 days. In July BP reached an $ 18.7bn settlement with the U.S. government,
13125-407: The once disputed lands, many of whom were Mexican nationals. Following the establishment of the current border, several towns sprang up along this boundary, and many of the Mexican citizens were given free land in the northern regions of Mexico in exchange for returning and repopulating the area. The Treaty of Guadalupe Hidalgo and another treaty in 1884 were the agreements originally responsible for
13250-612: The past three decades in the region. According to the September 11, 2006 issue of The Tampa Tribune , earthquake tremors were last felt in Florida in 1952, recorded in Quincy , 20 miles (32 km) northwest of Tallahassee . Cuba and Mexico: Exchange of notes constituting an agreement on the delimitation of the exclusive economic zone of Mexico in the sector adjacent to Cuban maritime areas (with map), of July 26, 1976. Cuba and United States: Maritime boundary agreement between
13375-486: The point where the Rio Grande crosses the 31° 47′ parallel north, It then proceeds northwards along that meridian up to the 31° 47′ parallel north and then eastwards along that parallel until it meets the Rio Grande. According to the International Boundary and Water Commission , the continental border then follows the middle of the Rio Grande—according to the 1848 Treaty of Guadalupe Hidalgo between
13500-466: The poor run the risk of being impacted by the gentrification of Tijuana. In late 2006, the U.S. Department of Homeland Security (DHS) announced a rule regarding new identification requirements for U.S. citizens and international travelers entering the U.S. implemented on January 23, 2007. This final rule and first phase of the WHTI specifies nine forms of identification, one of which is required to enter
13625-548: The presence of this disease. A leading exception to this rule is the special waiver obtained by riders participating in the Cabalgata Binacional Villista (see cavalcade ). Import from the U.S. to Mexico requires evidence within the prior 45 days of freedom from EIA, among other requirements. Data from the U.S. Border Patrol Agency's 2010 annual report shows that among the total number of border crossings without documentation from various countries into
13750-418: The provisions were temporarily suspended. The U.S. Immigration Act of 1924 established the U.S. Border Patrol . The Mexican Revolution , caused at least partially by animosity toward foreign ownership of Mexican properties, began in 1910. The revolution increased the political instability in Mexico but did not significantly slow U.S. investment. It did reduce economic development within Mexico, however, and
13875-474: The rate observed for the global ocean surface. The gulf is considered aseismic ; however, mild tremors have been recorded throughout history (usually 5.0 or less on the Richter magnitude scale ). Earthquakes may be caused by interactions between sediment loading on the sea floor and adjustment by the crust. On September 10, 2006, the U.S. Geological Survey National Earthquake Information Center reported that
14000-417: The river that became segregated from either country by a cutoff, often caused by rapid accretion or avulsion of the alluvial channel), especially in the lower Rio Grande Valley. When these bancos are created, the International Boundary and Water Commission investigates if land previously belonging to the U.S. or Mexico is to be considered on the other side of the border. In all cases of these adjustments along
14125-424: The settlement of the international border, both of which specified that the middle of the Rio Grande was the border, irrespective of any alterations in the channels or banks. The Rio Grande shifted south between 1852 and 1868, with the most radical shift in the river occurring after a flood in 1864. By 1873 the moving river-center border had cut off approximately 2.4 square kilometers (590 acres) of Mexican territory in
14250-403: The southeast by Cuba . The Southern U.S. states of Texas , Louisiana , Mississippi , Alabama , and Florida , which border the gulf on the north, are often referred to as the " Third Coast " of the United States (in addition to its Atlantic and Pacific coasts). The Gulf of Mexico took shape approximately 300 million years ago as a result of plate tectonics . The Gulf of Mexico basin
14375-409: The states of Alabama, Florida, Louisiana, Mississippi and Texas, as well as 400 local authorities. As of 2015 BP's cost for the clean-up, environmental and economic damages and penalties has reached $ 54bn. On May 12, 2016, a release of oil from subsea infrastructure on Shell's Brutus oil rig released 2,100 barrels of oil. This leak created a visible 2 by 13 miles (3.2 by 20.9 km) oil slick in
14500-565: The title Northern Border . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Northern_Border&oldid=851359131 " Category : Disambiguation pages Hidden categories: Short description is different from Wikidata All article disambiguation pages All disambiguation pages Mexico%E2%80%93United States border The Mexico–United States border ( Spanish : frontera Estados Unidos–México )
14625-417: The tourist aspect of the city, it is damaging to low-income residents that will no longer be able to afford the cost of living in Tijuana. Tijuana is home to many deportees from the U.S., many who have lost everything and do not have an income to rely on and are now in a new city in which they have to quickly adapt in order to survive. San Diego developers would bring many benefits to Tijuana, but deportees and
14750-507: The two nations, "along the deepest channel" (also known as the thalweg )—a distance of 2,020 km (1,255 mi) to its mouth at the Gulf of Mexico. The Rio Grande frequently meanders along the Texas–Mexico border. As a result, the U.S. and Mexico have a treaty by which the Rio Grande is maintained as the border, with new cut-offs and islands being transferred to the other nation as necessary. The Boundary Treaty of 1970 between Mexico and
14875-535: The two nations, and provide for flood control and water sanitation. Once viewed as a model of international cooperation, in recent decades the IBWC has been heavily criticized as an institutional anachronism, by-passed by modern social, environmental and political issues. In particular, jurisdictional issues regarding water rights in the Rio Grande Valley have continued to cause tension between farmers along
15000-490: The viceroy requested a rescue fleet and sent Ángel de Villafañe from Mexico City, marching overland to find the treasure-laden vessels. Villafañe traveled to Pánuco and hired a ship to transport him to the site, which had already been visited from that community. He arrived in time to greet García de Escalante Alvarado (a nephew of Pedro de Alvarado ), commander of the salvage operation, when Alvarado arrived by sea on July 22, 1554. The team labored until September 12 to salvage
15125-580: The world. The Mexico–U.S. border begins at the Initial Point of Boundary Between U.S. and Mexico , which is set one marine league (three nautical miles ) south of the southernmost point of San Diego Bay . The border then proceeds for 227 km (141 mi) in a straight line towards the confluence of the Colorado River and Gila River . The border continues southwards along the Colorado River for 39 km (24 mi), until it reaches
15250-434: Was a late Triassic–early Jurassic phase of rifting during which rift valleys formed and filled with continental red beds . Second, as rifting progressed through early and middle Jurassic times, the continental crust was stretched and thinned. This thinning created a broad zone of transitional crust, which displays modest and uneven thinning with block faulting and a broad zone of uniformly thinned transitional crust, which
15375-462: Was claimed by BP that approximately 1,000 barrels (160 m ) of oil per day were issuing from the wellhead , about 1-mile (1.6 km) below the surface on the ocean floor. On April 29, the U.S. government revealed that approximately 5,000 barrels (790 m ) per day, five times the original estimate, were pouring into the gulf from the wellhead. The resulting oil slick quickly expanded to cover hundreds of square miles of ocean surface, posing
15500-415: Was created in 1924 with its primary mission to detect and prevent the illegal entry of immigrants into the U.S. Together with other law enforcement officers, the Border Patrol maintains the U.S.' borderlands—regulating the flow of legal immigration and goods while patrolling for undocumented migrants and trafficking of people and contraband. The present strategy to enforce migration along the U.S.–Mexico border
15625-519: Was part of New Spain . In the early 19th century, the U.S. bought the lands known as the Louisiana Purchase from France and began to expand steadily westward. After the 1803 Louisiana Purchase, the border between the U.S. and New Spain was not clearly defined. The border was established in the 1819 Adams–Onís Treaty between the U.S. and Spain, which specified northern and eastern borders. Mexico gained its independence from Spain, and
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