FILE - In this Aug. 11, 1951 file photo, U.S. Border Patrol inspectors Fred H. Voight, left, and Gordon MacDonald, right, both from the El Centro U.S. Border Patrol sector headquarters, search two Mexican nationals, Pedro Vidal, with bag, and Canuto Garcia, right, shortly after the two men illegally crossed the border from Mexico, west of Calexico, Calif. Mexican laborers try to cross in this area to the United States, to work on the farms of the nearby Imperial Valley. (AP Photo/File)