NEW YORK — For months, as New York City has struggled to find shelter for more than 50,000 migrants, Mayor Eric Adams has sought to rally residents to push Washington for more help. “I need you to raise your voice on the federal level,” Adams said at a town hall-style event in Manhattan on Thursday night. “I need you to say, as New Yorkers, ‘We deserve to be treated better.’” New Yorkers have been raising their voices. Sign up for The Morning newsletter from the New York Times At him. It seems a