Immigrant advocates are pushing Senate leaders to fast-track legislation that would extend Temporary Protected Status (TPS) for Haitians through 2027, amid pushback from some lawmakers who view the effort as “backdoor amnesty” and the legal uncertainty from the U.S. Supreme Court’s pending decision on the immigration program. At the center of advancing H.R. 1689 in the upper Congressional chamber is Senate Democratic Leader Chuck Schumer. He pla…