Illegal immigrants prepare to enter a bus after being processed at Tucson (Arizona) Sector U.S. Border Patrol headquarters in 2012.
Illegal immigrants prepare to enter a bus after being processed at Tucson (Arizona) Sector U.S. Border Patrol headquarters in 2012. Ross D. Franklin AP File
Illegal immigrants prepare to enter a bus after being processed at Tucson (Arizona) Sector U.S. Border Patrol headquarters in 2012. Ross D. Franklin AP File