A file photo shows a US Border Patrol agent drives near wall at US and Mexican border in Nogales, Arizona

 
A file photo shows a US Border Patrol agent drives near wall at US and Mexican border in Nogales, Arizona
A U.S. Border Patrol agent drives along the wall that separates Nogales, Arizona, from Nogales, Sonora, Mexico on the U.S. and Mexican border in this May 21, 2006 file photo. Tougher security along the U.S.-Mexico border is forcing migrants to take more dangerous, remote routes to cross into the United States and pushing up the number of deaths in the desert July 13, 2007. REUTERS/Jeff Topping/Files (UNITED STATES)