A ruling by the 1st U.S. Circuit Court of Appeals halted deportations of people to countries other than their own, at least temporarily throwing a core immigration policy of the Trump administration into question. The administration said the ruling came Wednesday just minutes before midnight and forced the cancellation of a flight with 70 people that was headed to three countries. The administration appealed to the Supreme Court on Thursday, saying justices needed to step in to "halt that chaos." It said the flight cancellation "required a new round of diplomatic engagement with each of the three countries," which it did not name. Plaintiffs for immigrants sought emergency relief from the appeals court Wednesday night, saying they heard from "multiple sources" about a deportation.