FILE - In this Sept. 10, 2014 file photo, detained immigrant children line up in the cafeteria at the Karnes County Residential Center, a temporary home for immigrant women and children detained at the border, in Karnes City, Texas. Homeland Security Secretary Jeh Johnson says federal officials are making "substantial changes" to end the long-term detention of migrant families who are being held mainly at two large facilities in Texas. (AP Photo/Eric Gay, File)
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