Enlarge / A U.S. Customs and Border Protection officer checks identifications as people cross into the United States from Mexico on September 23, 2016 in San Ysidro, California. (credit: John Moore
Enlarge / A U.S. Customs and Border Protection officer checks identifications as people cross into the United States from Mexico on September 23, 2016 in San Ysidro, California. (credit: John Moore