A migrant in chains prepares to board a deportation flight to Guatemala City at Phoenix-Mesa Gateway Airport in Mesa, Ariz. (John Moore / Getty Images)
Some migrants who make the long, perilous journey from South America to the U.S. end up having to be rescued by navy ships, such as this one belonging to the El Salvador fleet. (John Moore / Getty Images)
Three migrants convicted of a felony or deportable offense in the U.S. are lined up for an admission procedure at a privately managed detention center in San Diego.
(Robert Nickelsberg / Getty Images)
Migrants are searched before boarding a deportation flight to Guatemala City at Phoenix-Mesa Gateway Airport on June 24, 2011.
(John Moore / Getty Images)
Shackled migrants who were in the U.S. illegally sit on an Immigration and Customs Enforcement charter flight in October 2015 at the Mesa, Ariz, airport.
(John Moore / Getty Images)
Border Patrol agents at the U.S.-Mexico border wall.
