A 3.6-mile stretch of the U.S.-Mexico border fence, completed in 2009, cost $57.7 million to build through rugged terrain east of San Ysidro. A wall along the entire border could cost between $12 billion and $38 billion. (Don Bartletti / Los Angeles Times)
Sunset on the U.S.-Mexico border in Naco, Ariz.
(Don Bartletti / Los Angeles Times)
A Border Patrol agent along the “floating fence” that sits atop the Imperial Sand Dunes in southeastern California. (Don Bartletti / Los Angeles Times)
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The U.S.-Mexico border fence at Border Field State Park in San Diego.
(Irfan Khan / Los Angeles Times)
An opening in the border fence near McAllen, Texas.
(John Moore / Getty Images)
The border fence separating the towns of Anapra, Mexico, and Sunland Park, N.M.
(Christian Torres / Associated Press)
With a rifle slung over his shoulder, Bob Maupin gazes toward Mexico over a fortified fence he built along the border to discourage immigrants from trampling over his property about 65 miles east of San Diego.
(Don Bartletti / Los Angeles Times)
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Border Patrol Agent Eduardo Olmos near the secondary fence separating Tijuana and San Diego.
(Gregory Bull / Associated Press)
The fence stops near McAllen, Texas.
(John Moore / Getty Images)
The border fence at the base of Otay Mountain in San Diego County.
(Don Bartletti / Los Angeles Times)
The fence a few miles east of Campo, Calif.
(Don Bartletti / Los Angeles Times)
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Near San Luis, Ariz.
(Don Bartletti / Los Angeles Times)
A U.S. Border Patrol agent gazes across the border fence in San Diego County.
