Foreigners who were given emergency refuge in the United States should go home when their emergency is over, says John Kelly, secretary of the Department of Homeland Security. That is a dramatic reversal from prior administrations, which have repeatedly extended the supposedly “Temporary Protected Status” stays of roughly 300,000 Haitians, El Salvadorans, Hondurans and others who have fled since the 1990s from natural and man-made disasters to the United States. Kelly’s spokesman, David Lapan, highlighted a second dramatic policy change when he said that Kelly recently told Haitian government officials that the return of 50,000 U.S.-based Haitians would be a...