** FILE ** A U.S. Border Patrol vehicle sits along the U.S.-Mexico border in Nogales, Ariz., on Tuesday, July 27, 2010. (AP Photo/Jae C. Hong, File)

Photo by: Jae C. Hong

** FILE ** A U.S. Border Patrol vehicle sits along the U.S.-Mexico border in Nogales, Ariz., on Tuesday, July 27, 2010. (AP Photo/Jae C. Hong, File)