A Salvadoran family waits at a Greyhound bus station for their trip to Houston on July 25, 2014 in McAllen, Texas. After a surge in recent months, the number of unaccompanied minors arriving at the U.S.-Mexico border from Central America has dropped sharply, and emergency shelters set up on military bases have closed for the time being. It's unclear if more child migrants will arrive after the summer.
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