WASHINGTON (AP) — A top Trump administration immigration official defended the effort to effectively end asylum at the U.S.-Mexico border for nearly all migrants, saying Friday it was necessary to drive down a massive backlog of immigration cases. Ken Cuccinelli, the acting head of U.S. Citizenship and Immigration Services, told The Associated Press Friday that the Supreme Court’s decision this week to allow sweeping regulations to take effect while litigation continued was a big win for the government. The new policy will deny asylum to nearly all migrants arriving at the southern border who aren’t from Mexico because it disallows anyone who passes through another country without first seeking and failing to obtain asylum there.