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UNITED STATES - AUGUST 27: Greisa Martinez, interrupts a book signing by Rep. Paul Ryan, R-Wis., left, to call attention to immigration reform at the Barnes and Noble in Thornton, Colo., August 27, 2014. Ryan is on a tour promoting his new book "The Way Forward." (Photo By Tom Williams/CQ Roll Call)

UNITED STATES - AUGUST 27: Greisa Martinez, interrupts a book signing by Rep. Paul Ryan, R-Wis., left, to call attention to immigration reform at the Barnes and Noble in Thornton, Colo., August 27, 2014. Ryan is on a tour promoting his new book "The Way Forward." (Photo By Tom Williams/CQ Roll Call)

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