A memorial to migrants who have died trying to cross the border stands in Reynosa, Mexico, on Tuesday, June 17, 2014. More than 47,000 unaccompanied minors have crossed the border since October, a 92 percent increase from the prior year, according to U.S. Customs and Border Protection. They're part of a surge of immigrants, mainly Central American, fleeing violence and poverty after hearing that immigration policy has grown more accommodating. Photographer: Tochiro Gallegos/Bloomberg via Getty Images
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