Immigrant children from Nicaragua, Jenque Chevarria, 6, center, and his brother Jose, left, play inside the Catholic Charities RGV Thursday, June 21, 2018, in McAllen, Texas. Families, who have been processed and released by U.S. Customs and Border Protection, wait inside the facility before continuing their journey to cities across the United States. The Chevarria’s family is heading to San Francisco. (AP Photo/David J. Phillip)
Shoes and a teddy bear, brought by a group of U.S. mayors, are piled up outside a holding facility for immigrant children in Tornillo, Texas, near the Mexican border, Thursday, June 21, 2018. Mayors from more than a dozen U.S. cities including New York and Los Angeles gathered near the holding facility to call for the immediate reunification of immigrant children with their families. (AP Photo/Andres Leighton)
McALLEN, Texas — About 500 of the more than 2,300 children separated from their families at the U.S.-Mexico border have been reunited since May, a senior Trump administration official said Thursday, as confusion mounted over the “zero tolerance” policy that called for the prosecution of anyone caught entering the United States illegally.