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People are taken into custody by the U.S. Border Patrol near Falfurrias, Texas March 29, 2013. Brooks County has become an epicentre for illegal immigrant deaths in Texas. In 2012, sheriff's deputies found 129 bodies there, six times the number recorded in 2010. Most of those who died succumbed to the punishing heat and rough terrain that comprise the ranch lands of south Texas. Many migrants spend a few days in a "stash house", such as the Casa del Migrante, in Reynosa, Mexico, and many are ignorant of the treacherous journey ahead. Picture taken March 29, 2013. REUTERS/Eric Thayer ( USA-IMMIGRATION/DEATHS )

The border fence is seen in Mission, Texas March 28, 2013. Brooks County has become an epicentre for illegal immigrant deaths in Texas. In 2012, sheriff's deputies found 129 bodies there, six times the number recorded in 2010. Most of those who died succumbed to the punishing heat and rough terrain that comprise the ranch lands of south Texas. Many migrants spend a few days in a "stash house", such as the Casa del Migrante, in Reynosa, Mexico, and many are ignorant of the treacherous journey ahead. Picture taken March 28, 2013. REUTERS/Eric Thayer ( USA-IMMIGRATION/DEATHS )

The border fence is seen in Hidalgo, Texas March 28, 2013. Brooks County has become an epicentre for illegal immigrant deaths in Texas. In 2012, sheriff's deputies found 129 bodies there, six times the number recorded in 2010. Most of those who died succumbed to the punishing heat and rough terrain that comprise the ranch lands of south Texas. Many migrants spend a few days in a "stash house", such as the Casa del Migrante, in Reynosa, Mexico, and many are ignorant of the treacherous journey ahead. Picture taken March 28, 2013. REUTERS/Eric Thayer ( USA-IMMIGRATION/DEATHS )

A sign is seen on the gate of a ranch in Falfurrias, Texas April 2, 2013. Brooks County has become an epicentre for illegal immigrant deaths in Texas. In 2012, sheriff's deputies found 129 bodies there, six times the number recorded in 2010. Most of those who died succumbed to the punishing heat and rough terrain that comprise the ranch lands of south Texas. Many migrants spend a few days in a "stash house", such as the Casa del Migrante, in Reynosa, Mexico, and many are ignorant of the treacherous journey ahead. Picture taken April 2, 2013. REUTERS/Eric Thayer ( USA-IMMIGRATION/DEATHS )

A group of illegal immigrants, who handed themselves in to U.S. Border Patrol, sit in a restaurant in Encino, Texas March 29, 2013. Members of the group said their guide left them in the desert and never returned. After being lost for days and running out of food and water they handed themselves in. Brooks County has become an epicentre for illegal immigrant deaths in Texas. In 2012, sheriff's deputies found 129 bodies there, six times the number recorded in 2010. Most of those who died succumbed to the punishing heat and rough terrain that comprise the ranch lands of south Texas. Many migrants spend a few days in a "stash house", such as the Casa del Migrante, in Reynosa, Mexico, and many are ignorant of the treacherous journey ahead. Picture taken March 29, 2013. REUTERS/Eric Thayer ( USA-IMMIGRATION/DEATHS )

U.S. Border Patrol agent Daniel Tirado from the Rio Grande Valley Sector looks out at the Rio Grande river in Hidalgo, Texas March 28, 2013. Brooks County has become an epicentre for illegal immigrant deaths in Texas. In 2012, sheriff's deputies found 129 bodies there, six times the number recorded in 2010. Most of those who died succumbed to the punishing heat and rough terrain that comprise the ranch lands of south Texas. Many migrants spend a few days in a "stash house", such as the Casa del Migrante, in Reynosa, Mexico, and many are ignorant of the treacherous journey ahead. Picture taken March 28, 2013. REUTERS/Eric Thayer ( USA-IMMIGRATION/DEATHS )

The unidentified grave of a person whose remains were found in the desert is seen in Falfurrias, Texas April 1, 2013. Brooks County has become an epicentre for illegal immigrant deaths in Texas. In 2012, sheriff's deputies found 129 bodies there, six times the number recorded in 2010. Most of those who died succumbed to the punishing heat and rough terrain that comprise the ranch lands of south Texas. Many migrants spend a few days in a "stash house", such as the Casa del Migrante, in Reynosa, Mexico, and many are ignorant of the treacherous journey ahead. Picture taken April 1, 2013. REUTERS/Eric Thayer ( USA-IMMIGRATION/DEATHS )

The unidentified graves of people whose remains were found in the desert are seen in Falfurrias, Texas April 1, 2013. Brooks County has become an epicentre for illegal immigrant deaths in Texas. In 2012, sheriff's deputies found 129 bodies there, six times the number recorded in 2010. Most of those who died succumbed to the punishing heat and rough terrain that comprise the ranch lands of south Texas. Many migrants spend a few days in a "stash house", such as the Casa del Migrante, in Reynosa, Mexico, and many are ignorant of the treacherous journey ahead. Picture taken April 1, 2013. REUTERS/Eric Thayer ( USA-IMMIGRATION/DEATHS )

The Los Ebanos Ferry Crossing checkpoint is seen along the Rio Grande river in Los Ebanos, Texas March 28, 2013. Brooks County has become an epicentre for illegal immigrant deaths in Texas. In 2012, sheriff's deputies found 129 bodies there, six times the number recorded in 2010. Most of those who died succumbed to the punishing heat and rough terrain that comprise the ranch lands of south Texas. Many migrants spend a few days in a "stash house", such as the Casa del Migrante, in Reynosa, Mexico, and many are ignorant of the treacherous journey ahead. Picture taken March 28, 2013. REUTERS/Eric Thayer ( USA-IMMIGRATION/DEATHS )

A U.S. Border Patrol agent from the Rio Grande Valley Sector searches for a group of illegal immigrants who crossed the Rio Grande River in Mission, Texas March 28, 2013. Brooks County has become an epicentre for illegal immigrant deaths in Texas. In 2012, sheriff's deputies found 129 bodies there, six times the number recorded in 2010. Most of those who died succumbed to the punishing heat and rough terrain that comprise the ranch lands of south Texas. Many migrants spend a few days in a "stash house", such as the Casa del Migrante, in Reynosa, Mexico, and many are ignorant of the treacherous journey ahead. Picture taken March 28, 2013. REUTERS/Eric Thayer ( USA-IMMIGRATION/DEATHS )

A U.S. Border Patrol agent looks out at the desert near Falfurrias, Texas March 29, 2013. Brooks County has become an epicentre for illegal immigrant deaths in Texas. In 2012, sheriff's deputies found 129 bodies there, six times the number recorded in 2010. Most of those who died succumbed to the punishing heat and rough terrain that comprise the ranch lands of south Texas. Many migrants spend a few days in a "stash house", such as the Casa del Migrante, in Reynosa, Mexico, and many are ignorant of the treacherous journey ahead. Picture taken March 29, 2013. REUTERS/Eric Thayer ( USA-IMMIGRATION/DEATHS )

A sign is seen at the Falfurrias U.S. Border Patrol checkpoint near Falfurrias, Texas March 29, 2013. Brooks County has become an epicentre for illegal immigrant deaths in Texas. In 2012, sheriff's deputies found 129 bodies there, six times the number recorded in 2010. Most of those who died succumbed to the punishing heat and rough terrain that comprise the ranch lands of south Texas. Many migrants spend a few days in a "stash house", such as the Casa del Migrante, in Reynosa, Mexico, and many are ignorant of the treacherous journey ahead. Picture taken March 29, 2013. REUTERS/Eric Thayer ( USA-IMMIGRATION/DEATHS )

A street sign is seen in the Southmost neighborhood in Brownsville, Texas March 30, 2013. Brooks County has become an epicentre for illegal immigrant deaths in Texas. In 2012, sheriff's deputies found 129 bodies there, six times the number recorded in 2010. Most of those who died succumbed to the punishing heat and rough terrain that comprise the ranch lands of south Texas. Many migrants spend a few days in a "stash house", such as the Casa del Migrante, in Reynosa, Mexico, and many are ignorant of the treacherous journey ahead. Picture taken March 30, 2013. REUTERS/Eric Thayer ( USA-IMMIGRATION/DEATHS )

A U.S. Border Patrol agent walks past a rescue beacon near Falfurrias, Texas March 29, 2013. Brooks County has become an epicentre for illegal immigrant deaths in Texas. In 2012, sheriff's deputies found 129 bodies there, six times the number recorded in 2010. Most of those who died succumbed to the punishing heat and rough terrain that comprise the ranch lands of south Texas. Many migrants spend a few days in a "stash house", such as the Casa del Migrante, in Reynosa, Mexico, and many are ignorant of the treacherous journey ahead. Picture taken March 29, 2013. REUTERS/Eric Thayer ( USA-IMMIGRATION/DEATHS )

A boy runs on the shore at the boundary between the United States and Mexico, where the Rio Grande river meets the Gulf of Mexico in Brownsville, Texas March 31, 2013. Brooks County has become an epicentre for illegal immigrant deaths in Texas. In 2012, sheriff's deputies found 129 bodies there, six times the number recorded in 2010. Most of those who died succumbed to the punishing heat and rough terrain that comprise the ranch lands of south Texas. Many migrants spend a few days in a "stash house", such as the Casa del Migrante, in Reynosa, Mexico, and many are ignorant of the treacherous journey ahead. Picture taken March 31, 2013. REUTERS/Eric Thayer ( USA-IMMIGRATION/DEATHS )

Rancher Gabriel Cantu poses for a photograph on his property near Falfurrias, Texas April 2, 2013. Cantu said that he has noticed an increase in the number of people crossing his property recently. Brooks County has become an epicentre for illegal immigrant deaths in Texas. In 2012, sheriff's deputies found 129 bodies there, six times the number recorded in 2010. Most of those who died succumbed to the punishing heat and rough terrain that comprise the ranch lands of south Texas. Many migrants spend a few days in a "stash house", such as the Casa del Migrante, in Reynosa, Mexico, and many are ignorant of the treacherous journey ahead. Picture taken April 2, 2013. REUTERS/Eric Thayer ( USA-IMMIGRATION/DEATHS )

A U.S. Border Patrol agent checks cars at the Falfurrias checkpoint, near Falfurrias, Texas March 29, 2013. Located about 70 miles (113 km) north of the border, 5,000-7,000 cars pass through the checkpoint on a normal day, and 12,000 on holidays. Brooks County has become an epicentre for illegal immigrant deaths in Texas. In 2012, sheriff's deputies found 129 bodies there, six times the number recorded in 2010. Most of those who died succumbed to the punishing heat and rough terrain that comprise the ranch lands of south Texas. Many migrants spend a few days in a "stash house", such as the Casa del Migrante, in Reynosa, Mexico, and many are ignorant of the treacherous journey ahead. Picture taken March 29, 2013. REUTERS/Eric Thayer ( USA-IMMIGRATION/DEATHS )

A car filled with bales of marijuana is seen at a police station in La Grulla, Texas March 28, 2013. When police tried to pull the car over, the driver led officers on a high speed pursuit, driving the car into the Rio Grande river. The driver abandoned the vehicle and fled back across the river and into Mexico. Brooks County has become an epicentre for illegal immigrant deaths in Texas. In 2012, sheriff's deputies found 129 bodies there, six times the number recorded in 2010. Most of those who died succumbed to the punishing heat and rough terrain that comprise the ranch lands of south Texas. Many migrants spend a few days in a "stash house", such as the Casa del Migrante, in Reynosa, Mexico, and many are ignorant of the treacherous journey ahead. Border Patrol agents and local and state law enforcement are inundated with not only an increase in the numbers of illegal immigrants, but drug smugglers as well. Picture taken March 28, 2013. REUTERS/Eric Thayer ( USA-IMMIGRATION/DEATHS )

A man talks on a pay phone at Casa del Migrante in Reynosa April 1, 2013. Casa del Migrante provides housing, food, clothing and medical care to people who are planning to cross the border, and to those who have been deported from the United States. Brooks County has become an epicentre for illegal immigrant deaths in Texas. In 2012, sheriff's deputies found 129 bodies there, six times the number recorded in 2010. Most of those who died succumbed to the punishing heat and rough terrain that comprise the ranch lands of south Texas. Many migrants spend a few days in a "stash house", such as the Casa del Migrante, in Reynosa, Mexico, and many are ignorant of the treacherous journey ahead. Picture taken April 1, 2013. REUTERS/Eric Thayer ( USA-IMMIGRATION/DEATHS )

People sit on a couch at Casa del Migrante in Reynosa April 1, 2013. Casa del Migrante provides housing, food, clothing and medical care to people who are planning to cross the border, and to those who have been deported from the United States. Brooks County has become an epicentre for illegal immigrant deaths in Texas. In 2012, sheriff's deputies found 129 bodies there, six times the number recorded in 2010. Most of those who died succumbed to the punishing heat and rough terrain that comprise the ranch lands of south Texas. Many migrants spend a few days in a "stash house", such as the Casa del Migrante, in Reynosa, Mexico, and many are ignorant of the treacherous journey ahead. Picture taken April 1, 2013. REUTERS/Eric Thayer ( USA-IMMIGRATION/DEATHS )

Beds are seen in a sleeping area at Casa del Migrante in Reynosa April 1, 2013. Casa del Migrante provides housing, food, clothing and medical care to people who are planning to cross the border, and to those who have been deported from the United States. Brooks County has become an epicentre for illegal immigrant deaths in Texas. In 2012, sheriff's deputies found 129 bodies there, six times the number recorded in 2010. Most of those who died succumbed to the punishing heat and rough terrain that comprise the ranch lands of south Texas. Many migrants spend a few days in a "stash house", such as the Casa del Migrante, in Reynosa, Mexico, and many are ignorant of the treacherous journey ahead. Picture taken April 1, 2013. REUTERS/Eric Thayer ( USA-IMMIGRATION/DEATHS )

A man washes his clothes at Casa del Migrante in Reynosa April 1, 2013. Casa del Migrante provides housing, food, clothing and medical care to people who are planning to cross the border, and to those who have been deported from the United States. Brooks County has become an epicentre for illegal immigrant deaths in Texas. In 2012, sheriff's deputies found 129 bodies there, six times the number recorded in 2010. Most of those who died succumbed to the punishing heat and rough terrain that comprise the ranch lands of south Texas. Many migrants spend a few days in a "stash house", such as the Casa del Migrante, in Reynosa, Mexico, and many are ignorant of the treacherous journey ahead. Picture taken April 1, 2013. REUTERS/Eric Thayer ( USA-IMMIGRATION/DEATHS )

A man is reflected in a mirror at Casa del Migrante in Reynosa, Mexico April 1, 2013. Casa del Migrante provides housing, food, clothing and medical care to people who are planning to cross the border, and to those who have been deported from the United States. Brooks County has become an epicentre for illegal immigrant deaths in Texas. In 2012, sheriff's deputies found 129 bodies there, six times the number recorded in 2010. Most of those who died succumbed to the punishing heat and rough terrain that comprise the ranch lands of south Texas. Many migrants spend a few days in a "stash house", such as the Casa del Migrante, in Reynosa, Mexico, and many are ignorant of the treacherous journey ahead. Picture taken April 1, 2013. REUTERS/Eric Thayer ( USA-IMMIGRATION/DEATHS )

A man stands in a sleeping area at Casa del Migrante in Reynosa April 1, 2013. Casa del Migrante provides housing, food, clothing and medical care to people who are planning to cross the border, and to those who have been deported from the United States. Brooks County has become an epicentre for illegal immigrant deaths in Texas. In 2012, sheriff's deputies found 129 bodies there, six times the number recorded in 2010. Most of those who died succumbed to the punishing heat and rough terrain that comprise the ranch lands of south Texas. Many migrants spend a few days in a "stash house", such as the Casa del Migrante, in Reynosa, Mexico, and many are ignorant of the treacherous journey ahead. Picture taken April 1, 2013. REUTERS/Eric Thayer ( USA-IMMIGRATION/DEATHS )

Shoes dry at Casa del Migrante in Reynosa April 1, 2013. Casa del Migrante provides housing, food, clothing and medical care to people who are planning to cross the border, and to those who have been deported from the United States. Brooks County has become an epicentre for illegal immigrant deaths in Texas. In 2012, sheriff's deputies found 129 bodies there, six times the number recorded in 2010. Most of those who died succumbed to the punishing heat and rough terrain that comprise the ranch lands of south Texas. Many migrants spend a few days in a "stash house", such as the Casa del Migrante, in Reynosa, Mexico, and many are ignorant of the treacherous journey ahead. Picture taken April 1, 2013. REUTERS/Eric Thayer ( USA-IMMIGRATION/DEATHS )

A man receives a haircut at Casa del Migrante in Reynosa April 1, 2013. Casa del Migrante provides housing, food, clothing and medical care to people who are planning to cross the border, and to those who have been deported from the United States. Brooks County has become an epicentre for illegal immigrant deaths in Texas. In 2012, sheriff's deputies found 129 bodies there, six times the number recorded in 2010. Most of those who died succumbed to the punishing heat and rough terrain that comprise the ranch lands of south Texas. Many migrants spend a few days in a "stash house", such as the Casa del Migrante, in Reynosa, Mexico, and many are ignorant of the treacherous journey ahead. Picture taken April 1, 2013. REUTERS/Eric Thayer ( USA-IMMIGRATION/DEATHS )

A man sews his jeans at Casa del Migrante in Reynosa April 1, 2013. Casa del Migrante provides housing, food, clothing and medical care to people who are planning to cross the border, and to those who have been deported from the United States. Brooks County has become an epicentre for illegal immigrant deaths in Texas. In 2012, sheriff's deputies found 129 bodies there, six times the number recorded in 2010. Most of those who died succumbed to the punishing heat and rough terrain that comprise the ranch lands of south Texas. Many migrants spend a few days in a "stash house", such as the Casa del Migrante, in Reynosa, Mexico, and many are ignorant of the treacherous journey ahead. Picture taken April 1, 2013. REUTERS/Eric Thayer ( USA-IMMIGRATION/DEATHS )

A man sits on a couch at Casa del Migrante in Reynosa April 1, 2013. Casa del Migrante provides housing, food, clothing and medical care to people who are planning to cross the border, and to those who have been deported from the United States. Brooks County has become an epicentre for illegal immigrant deaths in Texas. In 2012, sheriff's deputies found 129 bodies there, six times the number recorded in 2010. Most of those who died succumbed to the punishing heat and rough terrain that comprise the ranch lands of south Texas. Many migrants spend a few days in a "stash house", such as the Casa del Migrante, in Reynosa, Mexico, and many are ignorant of the treacherous journey ahead. Picture taken April 1, 2013. REUTERS/Eric Thayer ( USA-IMMIGRATION/DEATHS )

A memorial is seen in the desert near Falfurrias, Texas April 2, 2013. Brooks County has become an epicentre for illegal immigrant deaths in Texas. In 2012, sheriff's deputies found 129 bodies there, six times the number recorded in 2010. Most of those who died succumbed to the punishing heat and rough terrain that comprise the ranch lands of south Texas. Many migrants spend a few days in a "stash house", such as the Casa del Migrante, in Reynosa, Mexico, and many are ignorant of the treacherous journey ahead. Picture taken April 2, 2013. REUTERS/Eric Thayer ( USA-IMMIGRATION/DEATHS )

U.S. Border Patrol agents search for a group of 50 illegal immigrants, following a report from a rancher, near Falfurrias, Texas March 29, 2013. Brooks County has become an epicentre for illegal immigrant deaths in Texas. In 2012, sheriff's deputies found 129 bodies there, six times the number recorded in 2010. Most of those who died succumbed to the punishing heat and rough terrain that comprise the ranch lands of south Texas. Many migrants spend a few days in a "stash house", such as the Casa del Migrante, in Reynosa, Mexico, and many are ignorant of the treacherous journey ahead. Picture taken March 29, 2013. REUTERS/Eric Thayer ( USA-IMMIGRATION/DEATHS )