June 22, 2018
An agent with the Department of Homeland Security denies access to New York City Mayor Bill de Blasio, left, to the holding facility for immigrant children in Tornillo, Texas, near the Mexican border, Thursday, June 21, 2018. (AP Photo/Andres Leighton)
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Immigration enforcement on the U.S.-Mexico border was plunged deeper into chaos over President Donald Trump's reversal of a policy separating immigrant children from parents, causing uncertainty for both migrant families and the federal agencies in charge of prosecuting and detaining them.