The Elks Lodge is illuminated in Ajo, Arizona, Monday night, April 3, 2017. (AP Photo/Rodrigo Abd)

A vendor shows a mask used by migrants as protection from the low desert night temperatures they face during their treks to the United States, in Sonoyta, in the northern Mexican state of Sonora, Tuesday, April 4, 2017. (AP Photo/Rodrigo Abd)

Crosses hang from the US-Mexico border fence in Nogales, Mexico, Sunday, April 2, 2017. (AP Photo/Rodrigo Abd)

Rohan Ayala stands next to his father outside their home, meters from the fence marking the U.S.-Mexico border in Juarez Valley, Mexico, Wednesday, March 29, 201, across the border from the outskirts of El Paso, Texas. A segment of new fencing is being erected by the U.S. government outside El Paso, Texas, just west of the New Mexico state line. (AP Photo/Rodrigo Abd)

A mural depicts Mexican bandit and guerrilla leader in the Mexican Revolution Pancho Villa, right, and U.S Gen. John J. Pershing, side by side, on the wall of a cafe in Columbus, New Mexico, Friday, March 31, 2017. (AP Photo/Rodrigo Abd)

A woman stands outside her home located next to the border fence between the U.S. and Mexico, the gray, metal gate behind her, in the Anapra neighborhood of Ciudad Juarez, Mexico, Wednesday, March 29, 2017, across the border from Sunland Park, New Mexico. This week, Mexican residents like her are losing their view toward the U.S. as each hour a crew welds into place two more segments of steel border fence. (AP Photo/Rodrigo Abd)

Dairy cattle feed at a farm near Vado, New Mexico, Friday, March 31, 2017. (AP Photo/Rodrigo Abd)

Students board a school bus home at Columbus Elementary School, in Columbus, New Mexico, US, Friday, March 31, 2017. (AP Photo/Rodrigo Abd)

Boots decorate a wall at the Bad Rabbit Cafe in Terlingua, Texas, near the US-Mexico border, Monday, March 27, 2017. (AP Photo/Rodrigo Abd)

A sign advertising a mining company stands along the highway in Terlingua, Texas, about 20 miles from the US-Mexico border, Tuesday, March 28, 2017. (AP Photo/Rodrigo Abd)

Children play late afternoon in Sunland Park, near the new fence at the US-Mexico border in New Mexico, US, Thursday, March 30, 2017. (AP Photo/Rodrigo Abd)

A giant longhorn skull sculpture serves as the entrance to the Longhorn Grill restaurant in Amado, Arizona, near the US-Mexico border, Saturday, April 1, 2017. (AP Photo/Rodrigo Abd)

A youth looks at a new, taller fence being built along U.S.-Mexico border, replacing the shorter, gray metal fence in front of it, in the Anapra neighborhood of Ciudad Juarez, Mexico, Wednesday, March 29, 2017, across the border from Sunland Park, New Mexico. Construction of a new wall is likely to happen in a place like the desert west of here where the government already controls the land and there isn't already an effective obstacle. (AP Photo/Rodrigo Abd)

Tourists pose for a family portrait in Santa Elena Canyon, just feet from a cliff face that is Mexico, on the banks of the Rio Grande river in Big Bend National Park in Texas, Monday, March 27, 2017. (AP Photo/Rodrigo Abd)

A woman walks with a dog during a dust storm in Palomas, Mexico, Friday, March 31, 2017. (AP Photo/Rodrigo Abd)

Students interpretive drawings of "The Gum-Chewing Rattler" by Joe Hayes are displayed in the gym at Columbus Elementary School, in Columbus, New Mexico, Friday, March 31, 2017. (AP Photo/Rodrigo Abd)

Pregnant women ride on a float during a march against violence organized by local churches in Nuevo Laredo, Tamaulipas state Mexico, Saturday March, 25, 2017. (AP Photo/Rodrigo Abd)

Randy Calderon poses for the picture at Sportsman's Elite gun shop near the US-Mexico border in El Paso, Texas, US, Thursday, March 30, 2017. (AP Photo/Rodrigo Abd)

A boy peeks out of the window of his house in Nuevo Laredo, Tamaulipas state, Mexico, across the border from Laredo in the U.S, Friday March 24, 2017.(AP Photo/Rodrigo Abd)

A car with a message written on its dusty back window sits abandon on the side of a road in Terlingua, Texas, near the US-Mexico border, Monday, March 27, 2017. (AP Photo/Rodrigo Abd)

Tourists stand in Santa Elena Canyon, on the bank of the Rio Grande river, just feet from a cliff face that is Mexico, left, as they vacation at Big Bend National Park in Texas, Monday, March 27, 2017. (AP Photo/Rodrigo Abd)

Claudia Sanchez holds a broom outside her shack home in the Anapra neighborhood of Ciudad Juarez, Mexico, Wednesday, March 29, 2017, across the border from Sunland Park, New Mexico. Homes in this area are made of concrete block, wooden pallets, and any sort of recovered material that can withstand the wind and hold back the blowing sand of the dunes. (AP Photo/Rodrigo Abd)

Mexico's Migrant Juan Parras, 65, rests in a bed while waiting for lunch in "Senda de Vida" shelter in Reynosa, Mexico, Wednesday, March, 22, 2017. (AP Photo/Rodrigo Abd)

An aerostat used for surveillance by the US Border Patrol stands stationary along the highway near Valentine, Texas, about 20 miles from the US-Mexico border, Tuesday, March 28, 2017. (AP Photo/Rodrigo Abd)

A woman walks her dog next to an art installation made to look like a Prada retail store along a highway near Valentine, Texas, about 20 miles from the US-Mexico border, Tuesday, March 28, 2017. (AP Photo/Rodrigo Abd)

Fourth graders point out where they live on a map during a geography lesson class at the Columbus Elementary School, in Columbus, New Mexico, Friday, March 31, 2017. (AP Photo/Rodrigo Abd)

A road worker holds on to his hard hat during a dust storm near Valentine, Texas, about 20 miles from the US-Mexico border, Tuesday, March 28, 2017. (AP Photo/Rodrigo Abd)

Stars fill the sky over Tin Valley Retro Rentals where tourists can sleep in tipi-style tents in Terlingua, Texas, near the US-Mexico border, late Monday, March 27, 2017. The rental options are on about 90 acres of desert, where Airstream trailers and old buses are converted into quarters. People can also sleep in one of two tipis. (AP Photo/Rodrigo Abd)

Mail boxes stand in a line in Terlingua, Texas, near the US-Mexico border, Monday, March 27, 2017. (AP Photo/Rodrigo Abd)

A man sells newspapers in downtown Nuevo Laredo, Tamaulipas state, Mexico, across the border from Laredo in the U.S, Friday March 24, 2017. Th headlines read in Spanish 'visa requirements get harder' top, and 'policemen are sued', bottom.(AP Photo/Rodrigo Abd)

A dinosaur statue stands outside a store off the highway in Terlingua, Texas, near the US-Mexico border, Monday, March 27, 2017. (AP Photo/Rodrigo Abd)

A man gestures while passing next to a statue former Mexico's President Benito Juarez during a march against violence organized by local churches in Nuevo Laredo, Tamaulipas state, Mexico, Saturday March, 25, 2017. (AP Photo/Rodrigo Abd)

People cool off in the Rio Grand river, or Rio Grande and Rio Bravo in Spanish, in Nuevo Laredo, Tamaulipas state, Mexico, Saturday, March 25, 2017, across the border from Laredo, Texas. (AP Photo/Rodrigo Abd)

A man fishes by a cross in memory of a migrant who died trying to cross to the U.S., on the bank of the Rio Grande river in Nuevo Laredo, Tamaulipas state, Mexico, Saturday, March 25, 2017, across the border from Laredo, Texas. (AP Photo/Rodrigo Abd)

U.S. Border Patrol agents carry bales of marijuana they found along the highway near Ryan, Texas, about 20 miles from the US-Mexico border, Tuesday, March 28, 2017. One agent said "They (the smugglers) just leave it and come back another day. It's going to be sad when they come back for it." Drug interdiction is a core mission for the Border Patrol. (AP Photo/Rodrigo Abd)

A mariachi waits for clients in downtown Nuevo Laredo, Tamaulipas state, Mexico, across the border from Laredo in the U.S, Friday March 24, 2017.(AP Photo/Rodrigo Abd)

A mariachi band waits for clients in downtown Nuevo Laredo, Tamaulipas state, Mexico, across the border from Laredo in the U.S, Friday March 24, 2017.(AP Photo/Rodrigo Abd)

Migrants look at a map of Mexico after breakfast at the "Casa del Migrante" shelter in Nuevo Laredo ,Tamaulipas state, Mexico, Saturday March, 25, 2017. (AP Photo/Rodrigo Abd)

A man wearing a T-shirt depicting the statue of liberty with a skull face laughs as he walks during a march against violence organized by local churches in Nuevo Laredo, Tamaulipas state, Mexico, Saturday March, 25, 2017. (AP Photo/Rodrigo Abd)

The Pecos River near the US-Mexico border in Texas, Monday, March 27, 2017. (AP Photo/Rodrigo Abd)

Mexico's Migrant Juan Parras, 65, rests in a bed while waiting for lunch in "Senda de Vida" shelter in Reynosa, Mexico, Wednesday, March, 22, 2017. (AP Photo/Rodrigo Abd)

Jesus Esteban Cruz's stands inside her bedroom in Reynosa, Mexico, Wednesday, March, 22, 2017. (AP Photo/Rodrigo Abd)

"Senda de Vida" shelter in Reynosa, Mexico, Wednesday, March, 22, 2017. (AP Photo/Rodrigo Abd)

A truck advertising an auto body repair shop is seen behind the cemetery in Los Guerra, Tamaulipas, Mexico, Thursday, 23, 2017. (AP Photo/Rodrigo Abd)

Beers on ice for customers at Rudy's barbecue in McAllen, Texas, Thursday, 23, 2017. (AP Photo/Rodrigo Abd)

A dog pulls security on the roof of a house in Matamoros, Tamaulipas, Mexico, Wednesday, March, 22, 2017. (AP Photo/Rodrigo Abd)

A family enjoys a picnic on the banks of the Rio Grande river in Miguel Aleman, Tamaulipas state, Mexico, Wednesday, March, 22, 2017, located across the river from Roma, Texas. (AP Photo/Rodrigo Abd)

Maquila workers wait in a bus waiting to return to their houses after a day of work in Matamoros, Tamaulipas, Mexico, Wednesday, March, 22, 2017. (AP Photo/Rodrigo Abd)

Delfino Luis Trevino rests while waiting to have lunch at the "Senda de Vida" migrant shelter in Reynosa, Mexico, Wednesday, March, 22, 2017. (AP Photo/Rodrigo Abd) 

A double rainbow appears after a rain storm on the outskirts of Sasabe, in the Mexican state Sonora, near the border with Arizona, Saturday, April 1, 2017. (AP Photo/Rodrigo Abd)

Jesus Esteban Cruz's bedroom in Reynosa, Mexico, Wednesday, March, 22, 2017. (AP Photo/Rodrigo Abd)

Jesus Esteban Cruz's dinning room in Reynosa, Mexico, Wednesday, March, 22, 2017. (AP Photo/Rodrigo Abd)

A phone used by migrants to talk to their love ones is seen in the house of the migrant in Matamoros, Tamaulipas, Mexico, Wednesday, March, 22, 2017. (AP Photo/Rodrigo Abd)

Mexican Marines patrol downtown in Matamoros, Tamaulipas, Mexico, Wednesday, March, 22, 2017. (AP Photo/Rodrigo Abd)

The Pecos River near the US-Mexico border in Texas, Monday, March 27, 2017. (AP Photo/Rodrigo Abd)

A Cuban migrant shaves at the migrant shelter "Casa del Migrante" in Nuevo Laredo, Tamaulipas state, Mexico, Saturday, March 25, 2017, across the border from Laredo, Texas. (AP Photo/Rodrigo Abd)

Cuban migrant Rudy Rivero leads a religious procession, adapted to reflect the plight of immigrants, in Nuevo Laredo, Tamaulipas state, Mexico, Friday March, 24, 2017, across the border from Laredo, Texas. (AP Photo/Rodrigo Abd)

Cuban migrants hold a religious procession, adapted to reflect the plight of immigrants in Nuevo Laredo, Tamaulipas state, Mexico, Friday, March, 24, 2017, across the border from Laredo, Texas. (AP Photo/Rodrigo Abd)

Cuban migrant Rudy Rivero leads a religious procession, adapted to reflect the plight of immigrants, in Nuevo Laredo, Tamaulipas state, Mexico, Friday, March 24, 2017, across the border from Laredo, Texas. (AP Photo/Rodrigo Abd)

Cuban migrants Chaday Sanchez and her boyfriend Rodolfo Munoz eat dinner at the migrant shelter "Casa del Migrante" in Nuevo Laredo, Tamaulipas state, Mexico, Saturday, March 25, 2017, across the border from Laredo, Texas. (AP Photo/Rodrigo Abd)

A Cuban migrant shaves her husband's beard at the migrant shelter "Casa del Migrante" in Nuevo Laredo, Tamaulipas state, Mexico, Saturday, March 25, 2017, across the border from Laredo, Texas. (AP Photo/Rodrigo Abd)

Cuban migrant Maite Silva performs the role of the Virgin Mary during a religious procession adapted to reflect the plight of immigrants, in Nuevo Laredo, Tamaulipas state, Mexico, Friday, March 24, 2017, across the border from Laredo, Texas. (AP Photo/Rodrigo Abd)

Migrants have a dinner of rice and beans at the migrant shelter "Casa del Migrante" in Nuevo Laredo, Tamaulipas state, Mexico, Saturday, March 25, 2017, across the border from Laredo, Texas. (AP Photo/Rodrigo Abd)

Cubans eat dinner at the migrant shelter "Casa del Migrante" in Nuevo Laredo, Tamaulipas state, Mexico, Saturday, March 25, 2017, across the border from Laredo, Texas. (AP Photo/Rodrigo Abd)

Cuban Elaide Vilchez carries her one-month-old daughter Emily Melania Garcia during a religious procession adapted to reflect the plight of immigrants, in Nuevo Laredo, Tamaulipas state, Mexico, Friday, March 24, 2017, across the border from Laredo, Texas. (AP Photo/Rodrigo Abd)

Cubans check their cell phones inside the migrant shelter "Casa del Migrante" in Nuevo Laredo, Tamaulipas state, Mexico, Saturday, March 25, 2017, across the border from Laredo, Texas. The shelter limits migrants to one hour of cell phone usage, for security reasons. ?? (AP Photo/Rodrigo Abd)

Cubans sit in the migrant shelter "Casa del Migrante" in Nuevo Laredo, Tamaulipas state, Mexico, Saturday, March 25, 2017, across the border from Laredo, Texas. (AP Photo/Rodrigo Abd)

Cuban Idenia Vidal leads a religious procession adapted to reflect the plight of immigrants, in Nuevo Laredo, Tamaulipas state, Mexico, Friday, March, 24, 2017, across the border from Laredo, Texas. (AP Photo/Rodrigo Abd)

Tourists kayak through Santa Elena Canyon on the Rio Grande river, just feet from a cliff face that is Mexico, left, at Big Bend National Park in Texas, Monday, March 27, 2017. (AP Photo/Rodrigo Abd)

Santa Elena Canyon divides Texas and Mexico, where the Rio Grande river runs alongside Big Bend National Park in Texas, Monday, March 27, 2017. (AP Photo/Rodrigo Abd)

Margaret McCall, a clean energy consultant from Chicago, sits in Santa Elena Canyon in the Rio Grande river just feet from a cliff face that is Mexico, facing her, as she vacations at Big Bend National Park in Texas, Monday, March 27, 2017. When asked about the border wall, McCall said: “My first thought is: has Donald Trump seen this cliff? Because unless you’re building a 500-foot wall it’s really not going to cut it.” (AP Photo/Rodrigo Abd)

Tourists walk through Santa Elena Canyon, wading through the water of the Rio Grande, between Mexico, left, and the US, right, as they vacation at Big Bend National Park in Texas, Monday, March 27, 2017. (AP Photo/Rodrigo Abd)

U.S. Border Patrol agents carry bales of marijuana they found along the highway near Ryan, Texas, about 20 miles from the US-Mexico border, Tuesday, March 28, 2017. One agent said "They (the smugglers) just leave it and come back another day. It's going to be sad when they come back for it." Drug interdiction is a core mission for the Border Patrol. (AP Photo/Rodrigo Abd)

Margaret McCall, a clean energy consultant from Chicago, sits on a rock in Santa Elena Canyon in the Rio Grande river just feet from a cliff face that is Mexico, behind her, as she vacations at Big Bend National Park in Texas, Monday, March 27, 2017. “My first thought is: has Donald Trump seen this cliff?” McCall said. “Because unless you’re building a 500-foot wall it’s really not going to cut it.” (AP Photo/Rodrigo Abd)

Tourists walk through Santa Elena Canyon in the water of the Rio Grande, just feet from a cliff face that is Mexico, left, as they vacation at Big Bend National Park in Texas, Monday, March 27, 2017. (AP Photo/Rodrigo Abd)

A man descends a rock on the bank of the Rio Grande river, just feet from a cliff face that is Mexico, in Santa Elena Canyon as he vacations at Big Bend National Park in Texas, Monday, March 27, 2017. (AP Photo/Rodrigo Abd)

A boy walks away from the municipal garbage dump where he threw away the casing of an unusable TV, in the Anapra neighborhood of Ciudad Juarez, Mexico, Thursday, March 30, 2017, across the border from Sunland Park, New Mexico. The trash can reads in Spanish "Christ loves you." (AP Photo/Rodrigo Abd)

A worker welds a new fence between the Anapra neighborhood of Ciudad Juarez, Mexico, and Sunland Park, New Mexico, Thursday, March 30, 2017. The top three feet or so of the fence, which was planned and started before President Donald Trump's election, are a solid panel of oxidized steel. (AP Photo/Rodrigo Abd)

A fence marks the border between Mexico and the U.S. in the Juarez Valley, Mexico, Wednesday, March 29, 2017, across the border from the outskirts of El Paso, Texas. This border fence was planned and started before President Donald Trump's election. (AP Photo/Rodrigo Abd)

Children play a coin toss game in the sand as a train passes behind the fence marking the U.S.-Mexico border, in the Anapra neighborhood of Ciudad Juarez, Mexico, Wednesday, March 29, 2017, across the border from Sunland Park, New Mexico. There are more than 650 miles of fence, wall and vehicle barriers along the nearly 2,000-mile border. (AP Photo/Rodrigo Abd)

Clothes lay abandoned near a newly erected fence at the U.S.-Mexico border in the Anapra neighborhood of Ciudad Juarez, Mexico, Wednesday, March 29, 2017, across from Sunland Park, New Mexico. Residents of Anapra, a neighborhood anchored to the dunes, have fought to get running water, electricity and some paved streets in recent years. (AP Photo/Rodrigo Abd)

A man burns trash near the border fence in the Anapra neighborhood of Ciudad Juarez, Mexico, late Wednesday, March 29, 2017, across the border from Sunland Park, New Mexico. Residents of Anapra, a neighborhood anchored to the dunes, have fought to get running water, electricity and some paved streets in recent years. (AP Photo/Rodrigo Abd)

Children play on two fences marking the U.S.-Mexico border, in the Anapra neighborhood of Ciudad Juarez, Mexico, Wednesday, March 29, 2017, across the border form Sunland Park, New Mexico. In Mexico, people have lived and worked in the existing fence's shadow for years. That experience has made them dispassionate toward talk of new construction of a larger wall. (AP Photo/Rodrigo Abd)

Workers use a crane to lift a segment of a new fence into place on the U.S. side of the border with Mexico, where Sunland Park, New Mexico, meets the Anapra neighborhood of Ciudad Juarez, Mexico, Thursday, March 30, 2017. Residents on the Mexico side estimate 15 to 20 panels go up daily. (AP Photo/Rodrigo Abd)

A farm located adjacent to the fence at the US-Mexico border in the Juarez valley, Mexico, Wednesday, March 29, 2017, across from the outskirts of El Paso, Texas. (AP Photo/Rodrigo Abd)

Workers use a crane to lift a segment of a new fence into place on the U.S. side of the border with Mexico, where Sunland Park, New Mexico, meets the Anapra neighborhood of Ciudad Juarez, Mexico, Thursday, March 30, 2017. Residents on the Mexico side estimate 15 to 20 panels go up daily. (AP Photo/Rodrigo Abd)

A Border Patrol vehicle patrols near the fence at the US-Mexico border in Sunland Park, New Mexico, US, Thursday, March 30, 2017. (AP Photo/Rodrigo Abd)

Students line up to return to their classroom at Columbus Elementary School, in Columbus, New Mexico, US, Friday, March 31, 2017. (AP Photo/Rodrigo Abd)

AP reporter Christopher Sherman poses for a picture with students at Columbus Elementary School, in Columbus, New Mexico, US, Friday, March 31, 2017. (AP Photo/Rodrigo Abd)

Students wait for the school bus home at Columbus Elementary School, in Columbus, New Mexico, US, Friday, March 31, 2017. (AP Photo/Rodrigo Abd)

A student sits at her desk in a classroom at Columbus Elementary School, in Columbus, New Mexico, US, Friday, March 31, 2017. (AP Photo/Rodrigo Abd)

A student's slice of pizza beside a notebook in a classroom at Columbus Elementary School, in Columbus, New Mexico, US, Friday, March 31, 2017. (AP Photo/Rodrigo Abd)

Students line up to return to their classroom at Columbus Elementary School, in Columbus, New Mexico, US, Friday, March 31, 2017. (AP Photo/Rodrigo Abd)

A student raises her hand during class at Columbus Elementary School, in Columbus, New Mexico, US, Friday, March 31, 2017. (AP Photo/Rodrigo Abd)

Students from Columbus Elementary School, walk next to a Mexican soldier while crossing the border from Columbus, New Mexico, US, into Palomas, Mexico, after school, Friday, March 31, 2017. (AP Photo/Rodrigo Abd)

Students cross the border from Columbus, New Mexico, into Palomas, Mexico, after day of attending classes at Columbus Elementary, Friday, March 31, 2017. (AP Photo/Rodrigo Abd)

Columbus Elementary School students walk towards the U.S. port of entry on the border with Puerto Palomas, Mexico, after attending school in Columbus, New Mexico, Friday, March 31, 2017. (AP Photo/Rodrigo Abd)

Students wait inside a school bus at Columbus Elementary School, in Columbus, New Mexico, Friday, March 31, 2017, to be transported to the U.S. port of entry on the border with Puerto Palomas, Mexico. (AP Photo/Rodrigo Abd)

Fifth graders sit in their civics class at Columbus Elementary School, in Columbus, New Mexico, Friday, March 31, 2017. (AP Photo/Rodrigo Abd)

A fifth grade student shows his geometry work to a teacher at Columbus Elementary School, in Columbus, New Mexico, Friday, March 31, 2017. (AP Photo/Rodrigo Abd)

A student eats a slice of pizza during a break in a fourth grade classroom at Columbus Elementary School, in Columbus, New Mexico, Friday, March 31, 2017. (AP Photo/Rodrigo Abd)

Handprints and the Spanish word for "Liberty" mark slats of the US-Mexico border fence in Nogales, Mexico, Sunday, April 2, 2017. (AP Photo/Rodrigo Abd)

Rachel Baker, a Unitarian minister from Las Vegas, Nev., maneuvers to take a selfie through the US-Mexico border fence while standing in Nogales, Ariz., during a solidarity march, Sunday, April 2, 2017. (AP Photo/Rodrigo Abd)

A man in Nogales, Arizona, talks to his daughter and her mother who are standing on the other side of the border fence in Nogales, Mexico, Saturday, April 1, 2017. (AP Photo/Rodrigo Abd)

People gather for a car show featuring Volkswagen Beetles, known as 'bochos' by locals, in Caborca, in the Mexican state of Sonora, Saturday, April 1, 2017. Caborca lies in traditional tribal lands of the Tohono O'odham indigenous people, a region that straddles the U.S.-Mexico border in the states of Arizona and Sonora.(AP Photo/Rodrigo Abd)

Newlyweds Aldo and Brenda Norris wait for their wedding photographer outside a church in Caborca, Sonora state, Mexico, Saturday, April 1, 2017. Caborca lies in traditional tribal lands of the Tohono O'odham indigenous people, a region that straddles the U.S.-Mexico border in the states of Arizona and Sonora. (AP Photo/Rodrigo Abd)

A mural depicting a Tohono O'odham woman decorated y=the facade of a building in Caborca, in the Mexican state of Sonora, Saturday, April 1, 2017. Caborca lies in traditional tribal lands of the Tohono O'odham indigenous people, a region that straddles the U.S.-Mexico border in the states of Arizona and Sonora.(AP Photo/Rodrigo Abd)

Puddles of water, caused by a rain storm, line a dirt road near the border with Arizona, on the outskirts of Sasabe, in the Mexican state Sonora, Saturday, April 1, 2017. (AP Photo/Rodrigo Abd)

People gather for a car show featuring Volkswagen Beetles, known as 'bochos' by locals, in Caborca, in the Mexican state of Sonora, Saturday, April 1, 2017. Caborca lies in traditional tribal lands of the Tohono O'odham indigenous people, a region that straddles the U.S.-Mexico border in the states of Arizona and Sonora.(AP Photo/Rodrigo Abd)

Border Patrol agents on patrol ride past a road memorial dedicated to a fellow agent killed in a car accident near Why, Ariz., Monday, April 3, 2017. (AP Photo/Rodrigo Abd)

A bus painted in a Mexican flag motif and a banner with the Spanish farewell for "have a nice trip", serves as a roadside advertisement for a Chevron station, in Ajo, Arizona, Tuesday, April 4, 2017. (AP Photo/Rodrigo Abd)

Abandoned vintage cars sit rusting on the side of a road in Ajo, Arizona, Tuesday, April 4, 2017. (AP Photo/Rodrigo Abd)