MCALLEN, TX - JANUARY 04: A U.S. Border Patrol agent checks birth certificates while taking Central American immigrants into custody on January 4, 2017 near McAllen, Texas. Thousands of families and unaccompanied children, most from Central America, are crossing the border illegally to request asylum in the U.S. from violence and poverty in their home countries. The number of immigrants coming across has surged in advance of President-elect Donald Trump's inauguration January 20. He has pledged to build a wall along the U.S.-Mexico border. (Photo by John Moore/Getty Images)
