Trump's demand for federal funding of a U.S.–Mexico border wall resulted in the 2018–2019 government shutdown (the longest in American history) and followed with Trump's declaration of a national emergency regarding the U.S. southern border. He ended the Deferred Action for Childhood Arrivals (DACA) program which had provided temporary protection for undocumented immigrants brought into the U.S. as minors. The Trump administration implemented a family separation policy for migrants apprehended at the U.S.–Mexico border, controversially separating parents from their children, resulting in bipartisan condemnation and international outcry.