Razor barbed wire is seen through the border fence on the U.S. territory, seen from Tecate, Mexico April 4, 2019. REUTERS/Carlos Jasso

A cross is seen on the border fence between Mexico and the U.S. in Tecate, Mexico April 4, 2019. REUTERS/Carlos Jasso

A teddy bear is seen on top of a razor barbed wire on the border fence between Mexico and U.S. in Tecate, Mexico April 4, 2019. REUTERS/Carlos Jasso

A donkey stands next to the border fence between Mexico and the U.S. in Tecate, Mexico April 4, 2019. REUTERS/Carlos Jasso

A man walks next to the border fence between Mexico and U.S. in Tecate, Mexico April 4, 2019. REUTERS/Carlos Jasso

A new rolled up razor barbed wire is seen through the border fence in U.S. territory, seen from Tecate, Mexico April 4, 2019. REUTERS/Carlos Jasso

The old (bottom R) and the new border fence dividing U.S. and Mexico is seen from Tecate, Mexico April 4, 2019. REUTERS/Carlos Jasso

A jacket is seen on top of a razor barbed wire on the border fence between Mexico and U.S. in Tecate, Mexico April 4, 2019. REUTERS/Carlos Jasso

A donkey brays next to the border fence between Mexico and the U.S. in Tecate, Mexico April 4, 2019. REUTERS/Carlos Jasso TPX IMAGES OF THE DAY

A razor barbed wire is seen on the border fence in U.S. territory seen from Tecate, Mexico April 4, 2019. REUTERS/Carlos Jasso

A donkey brays next to the border fence between Mexico and the U.S. in Tecate, Mexico April 4, 2019. REUTERS/Carlos Jasso

A U.S. flag is seen through a razor barbed wire on the border fence in U.S. territory seen from Tecate, Mexico April 4, 2019. REUTERS/Carlos Jasso

The border wall between the U.S. and Mexico is shown from the U.S. side near Tecate, California, U.S., March 28, 2019. REUTERS/Mike Blake

A U.S. Customs and Border Patrol agent travels along the border wall between the U.S. and Mexico near Tecate, California, U.S., March 28, 2019. REUTERS/Mike Blake

The border wall between the U.S. and Mexico is shown from the U.S. side near Tecate, California, U.S., March 28, 2019. REUTERS/Mike Blake

The border wall between the U.S. and Mexico is shown from the U.S. side near Tecate, California, U.S., March 28, 2019. REUTERS/Mike Blake

A U.S. Customs and Border Patrol agent travels along the border wall between the U.S. and Mexico near Tecate, California, U.S., March 28, 2019. REUTERS/Mike Blake

Canadian-born artist Cosimo Cavallaro (L) is helped by Carlo Arcesi while building a wall made of cheese with his crowd funded project next to a portion of the U.S.-Mexico border wall near Tecate, California, U.S., March 28, 2019. REUTERS/Mike Blake

Canadian-born artist Cosimo Cavallaro works building a wall made of cheese as he crowd funds his project next to a portion of the U.S.-Mexico border wall near Tecate, California, U.S., March 28, 2019. REUTERS/Mike Blake

Canadian-born artist Cosimo Cavallaro is building a wall made of cheese with the help of a crowd funded project next to a portion of the U.S.-Mexico border wall near Tecate, California, U.S., March 28, 2019. REUTERS/Mike Blake

Canadian-born artist Cosimo Cavallaro works building a wall made of cheese as he crowd funds his project next to a portion of the U.S.-Mexico border wall near Tecate, California, U.S., March 28, 2019. REUTERS/Mike Blake

Canadian-born artist Cosimo Cavallaro uses a level before grading cheese while building a wall made of cheese with his crowd funded project next to a portion of the U.S.-Mexico border wall near Tecate, California, U.S., March 28, 2019. REUTERS/Mike Blake

Canadian-born artist Cosimo Cavallaro grades a 50 lb block of cheese level while building a wall made of cheese with his crowd funded project next to a portion of the U.S.-Mexico border wall near Tecate, California, U.S., March 28, 2019. REUTERS/Mike Blake

Canadian-born artist Cosimo Cavallaro (L) is helped by Carlo Arcesi while building a wall made of cheese with his crowd funded project next to a portion of the U.S.-Mexico border wall near Tecate, California, U.S., March 28, 2019. REUTERS/Mike Blake

Canadian-born artist Cosimo Cavallaro uses a level before grading cheese while building a wall made of cheese with his crowd funded project next to a portion of the U.S.-Mexico border wall near Tecate, California, U.S., March 28, 2019. REUTERS/Mike Blake

Canadian-born artist Cosimo Cavallaro poses for a portrait while building a wall made of cheese with his crowd funded project next to a portion of the U.S.-Mexico border wall near Tecate, California, U.S., March 28, 2019. REUTERS/Mike Blake

Canadian-born artist Cosimo Cavallaro poses for a portrait while building a wall made of cheese with his crowd funded project next to a portion of the U.S.-Mexico border wall near Tecate, California, U.S., March 28, 2019. REUTERS/Mike Blake

Canadian-born artist Cosimo Cavallaro poses for a portrait while building a wall made of cheese with his crowd funded project next to a portion of the U.S.-Mexico border wall near Tecate, California, U.S., March 28, 2019. REUTERS/Mike Blake

Canadian-born artist Cosimo Cavallaro poses for a portrait while building a wall made of cheese with his crowd funded project next to a portion of the U.S.-Mexico border wall near Tecate, California, U.S., March 28, 2019. REUTERS/Mike Blake

Border patrol agents search for illegal immigrants along the wall on the U.S. border with Mexico in Tecate, California, U.S., June 11, 2018. Picture taken June 11, 2018. REUTERS/Adrees Latif

A border patrol agent looks towards Mexico from a hole in the wall along the U.S. border in Tecate, California, U.S., June 11, 2018. Picture taken June 11, 2018. REUTERS/Adrees Latif

Border patrol agents search for illegal immigrants along the wall on the U.S. border with Mexico in Tecate, California, U.S., June 11, 2018. REUTERS/Adrees Latif

Border patrol agents keep guard along the wall on the U.S. border with Mexico in Tecate, California, U.S., June 11, 2018. REUTERS/Adrees Latif

Border patrol agents shine a flashlight towards shoe prints while searching for illegal immigrants along the U.S. border with Mexico in Tecate, California, U.S., June 11, 2018. REUTERS/Adrees Latif

Border patrol agents use all-terrain vehicles (ATV) while searching for illegal immigrants along the wall on the U.S. border with Mexico in Tecate, California, U.S., June 11, 2018. REUTERS/Adrees Latif

Border patrol agents point towards Mexico while searching for illegal immigrants near the wall on the U.S. border with Mexico in Tecate, California, U.S., June 11, 2018. REUTERS/Adrees Latif

Border patrol agents search for illegal immigrants along the wall on the U.S. border with Mexico in Tecate, California, U.S., June 11, 2018. REUTERS/Adrees Latif

The U.S. Mexico border fence is shown looking south from Tecate, California, U.S., September 15, 2017. REUTERS/Mike Blake

The U.S. Mexico border fence is shown looking south from Tecate, California, U.S., September 15, 2017. REUTERS/Mike Blake

The U.S. Mexico border fence is shown looking south from Tecate, California, U.S., September 15, 2017. REUTERS/Mike Blake

A soldier keeps guard at a marijuana plantation near an area known as "El Hongo" on the outskirts of the municipality of Tecate, on the border with the U.S. California state, September 25, 2015. The Mexican army found the marijuana plantation of an area of 5,100 square metres that was supplied with water through a drip irrigation system, and was camouflaged among native plants, according to local media. Picture taken September 25, 2015. REUTERS/Jorge Duenes

Soldiers remove plants from a marijuana plantation near an area known as "El Hongo" on the outskirts of the municipality of Tecate, on the border with the U.S. California state, September 25, 2015. The Mexican army found the marijuana plantation of an area of 5,100 square metres that was supplied with water through a drip irrigation system, and was camouflaged among native plants, according to local media. Picture taken September 25, 2015. REUTERS/Jorge Duenes

A soldier walks through a marijuana plantation near an area known as "El Hongo" on the outskirts of the municipality of Tecate, on the border with the U.S. California state, September 25, 2015. The Mexican army found the marijuana plantation of an area of 5,100 square metres that was supplied with water through a drip irrigation system, and was camouflaged among native plants, according to local media. Picture taken September 25, 2015. REUTERS/Jorge Duenes

Journalists climb into a cross border tunnel located underneath a water purifying plant in Tecate December 6, 2012. The tunnel, which is still under construction, was found due to an anonymous tip. It has no exit to the U.S. but a ventilation system, electricity and a water pump. Seven people who were found working on the tunnel when it was discovered have been arrested by the authorities, reported local media. REUTERS/Jorge Duenes (MEXICO - Tags: CRIME LAW)

Journalists climb down a ladder in cross border tunnel located underneath a water purifying plant in Tecate December 6, 2012. The tunnel, which is still under construction, was found due to an anonymous tip. It has no exit to the U.S. but a ventilation system, electricity and a water pump. Seven people who were found working on the tunnel when it was discovered have been arrested by the authorities, reported local media. REUTERS/Jorge Duenes (MEXICO - Tags: CRIME LAW)

Electrical breakers are seen inside a cross border tunnel located underneath a water purifying plant in Tecate December 6, 2012. The tunnel, which is still under construction, was found due to an anonymous tip. It has no exit to the U.S. but a ventilation system, electricity and a water pump. Seven people who were found working on the tunnel when it was discovered have been arrested by the authorities, reported local media. REUTERS/Jorge Duenes (MEXICO - Tags: CRIME LAW)

A journalist walks in a cross border tunnel located underneath a water purifying plant in Tecate December 6, 2012. The tunnel, which is still under construction, was found due to an anonymous tip. It has no exit to the U.S. but a ventilation system, electricity and a water pump. Seven people who were found working on the tunnel when it was discovered have been arrested by the authorities, reported local media. REUTERS/Jorge Duenes (MEXICO - Tags: CRIME LAW)

Children walk past a church in the border town of Jacume, in the Mexican state of Baja California June 21, 2009. Mexican drug traffickers fighting a brutal turf war are attacking priests and preachers who denounce cartel violence, shattering clerics' untouchable aura and breaking honor codes in the world's second-biggest Catholic country. Picture taken June 21, 2009. REUTERS/Jorge Duenes (MEXICO RELIGION CONFLICT SOCIETY POLITICS)

Believers walk out a church in the border town of Tecate, in the Mexican state of Baja California June 21, 2009. Mexican drug traffickers fighting a brutal turf war are attacking priests and preachers who denounce cartel violence, shattering clerics' untouchable aura and breaking honor codes in the world's second-biggest Catholic country. Picture taken June 21, 2009. REUTERS/Jorge Duenes (MEXICO RELIGION CONFLICT SOCIETY POLITICS)

A view of the border town of Jacume in the Mexican state of Baja California June 21, 2009. Mexican drug traffickers fighting a brutal turf war are attacking priests and preachers who denounce cartel violence, shattering clerics' untouchable aura and breaking honor codes in the world's second-biggest Catholic country. Picture taken June 21, 2009. REUTERS/Jorge Duenes (MEXICO RELIGION CONFLICT SOCIETY POLITICS)

A tool is seen in a tunnel under the U.S. Mexico border which starts in Tecate and runs into southern California December 4, 2007. Gunmen killed the police chief of Tecate, a Mexican city bordering California, on Tuesday by shooting him some 50 times in an apparent revenge attack after police found the drug-smuggling tunnel under the border on Monday. REUTERS/Jorge Duenes (MEXICO)

A man stands in a tunnel under the U.S. Mexico border which starts in Tecate and runs into southern California December 4, 2007. Gunmen killed the police chief of Tecate, a Mexican city bordering California, on Tuesday by shooting him some 50 times in an apparent revenge attack after police found the drug-smuggling tunnel under the border on Monday. REUTERS/Jorge Duenes (MEXICO)

A light shines in a tunnel under the U.S. Mexico border which starts in Tecate and runs into southern California, December 4, 2007, after it was discovered on Monday by law enforcement agencies. Gunmen killed the police chief of Tecate, a Mexican city bordering California, on Tuesday by shooting him some 50 times in an apparent revenge attack after police found the drug-smuggling tunnel under the border. REUTERS/Jorge Duenes (MEXICO)

Tools are seen in a tunnel under the U.S. Mexico border which starts in Tecate and runs into southern California, December 4, 2007, after it was discovered on Monday by law enforcement agencies. Gunmen killed the police chief of Tecate, a Mexican city bordering California, on Tuesday by shooting him some 50 times in an apparent revenge attack after police found the drug-smuggling tunnel under the border. REUTERS/Jorge Duenes (MEXICO)

An image of the Virgin of Guadalupe is seen in a tunnel, nearly a mile (1.6 km) long running into California from Tecate near the Pacific coast, December 4, 2007, after it was discovered on Monday by law enforcement agencies. Gunmen killed the police chief of Tecate, a Mexican city bordering California, on Tuesday by shooting him some 50 times in an apparent revenge attack after police found the drug-smuggling tunnel under the border. REUTERS/Jorge Duenes (MEXICO)

A woman descends into a tunnel nearly a mile (1.6 km) long running into California from Tecate near the Pacific coast, December 4, 2007, after it was discovered on Monday by law enforcement agencies. Gunmen killed the police chief of Tecate, a Mexican city bordering California, on Tuesday by shooting him some 50 times in an apparent revenge attack after police found the drug-smuggling tunnel under the border. REUTERS/Jorge Duenes (MEXICO)

A U.S. Border Patrol agent looks for activity around a popular staging area for illegal immigrants along Highway 94 in the rural eastern part of San Diego county near dusk December 8, 2005. Behind the agent are the lights from Tecate, Mexico. An immigration reform bill is coming before congress that, if passed, would increase the number of agents on the border, enlist military support in surveillance of the border and reimburse local law enforcement that help combat illegal immigration. REUTERS/Fred Greaves

U.S. Border Patrol agents check in with each another while on the border road in the rural eastern part of San Diego county, just north of Tecate, Mexico, December 8, 2005. Behind them is part of a metal border fence that helps reduce the number of load vehicles driving north across the border. An immigration reform bill is coming before congress that would, if passed, increase the number of agents on the border, enlist military support in surveillance of the border and reimburse local law enforcement that help combat illegal immigration. REUTERS/Fred Greaves