MISSION, TX - SEPTEMBER 08: Families of Central American immigrants turn themselves in to U.S. Border Patrol agents after crossing the Rio Grande River from Mexico on September 8, 2014 in Mission, Texas. Although the numbers of such immigrant families and unaccompanied minors have decreased from a springtime high, thousands continue to cross in the border illegally into the United States. The Rio Grande Valley sector is the busiest area for illegal border crossings, especially for Central Americans, into the U.S. (Photo by John Moore/Getty Images)
