A defiant Rep. Matt Gaetz (R-Fla.) says he has no plans to resign from Congress amid a federal investigation into whether he paid women — and a 17-year-old girl — for sexual favors. Yet behind the scenes, a growing number of Gaetz’s Republican colleagues are predicting his days on Capitol Hill are growing short. “In reality, yes, he won’t last long,” one member told The Hill on Friday. The forecasts seem to be based on some combination of political pragmatism and wishful thinking. Gaetz, who stands among the fiercest defenders of former President Trump, is no stranger to controversy, but...