IN PICTURES: The U.S.-Mexico border as it stands now
Along the U.S.- Mexico border fence
An excavator removes a fence to be replaced by a section of the border wall at Sunland Park, U.S., opposite Ciudad Juarez, Mexico.
Buildings in Nogales, Mexico separated by a border fence from Nogales, Arizona, United Sates.
A general view shows a newly built section of the U.S.-Mexico border wall at Sunland Park, opposite Ciudad Juarez, Mexico.
A road abruptly ends next to a sign for a cattle ranch near Douglas, Arizona, United States.
A woman talks to her relatives across a fence separating Mexico and the United States, in Tijuana, Mexico.
People are seen next to a wall separating Mexico and the United States, as photographed from Playas Tijuana, in Tijuana, Mexico.
A boy looks at U.S. workers building a section of the U.S.-Mexico border wall at Sunland Park, U.S. opposite the Mexican border city of Ciudad Juarez.
A burnt car is seen next to a section of the wall separating Mexico and the United States, in Tijuana, Mexico.
A worker stands next to a newly built section of the U.S.-Mexico border fence at Sunland Park, opposite the Mexican border city of Ciudad Juarez.
Our Lady of Guadalupe at a house near a newly built section of the U.S.-Mexico border fence in Ciudad Juarez, Mexico.
A woman is pictured at the patio of her house by a newly built section of the U.S.-Mexico border fence.
Wooden crosses, in memory of migrants who died crossing to the U.S., lean on the border fence in Nogales, Mexico.
A Cochise County Sheriff officer stands along the border fence between the United States and Mexico.
A U.S. Border patrol agent opens a gate on the fence along the Mexico border to allow vehicles pass in El Paso.
A fence separates the border towns of Nogales, Mexico (R) and Nogales, Arizona, United Sates.
People look out to where a border structure separates San Diego, right, from Tijuana, Mexico, left.
A Border Patrol vehicle drives by the border fence in Tecate, Calif., left, along the metal barrier that lines the border seen from Tecate, Mexico.
The border structure separating San Diego from Tijuana, Mexico, as people walk along the beach in Tijuana.
Border Patrol agent Eduardo Olmos walks near the secondary fence separating Tijuana, Mexico, background, and San Diego.