R epublican Rep. Byron Donalds had just strode into a waterfront yacht club in Naples, Florida, last month when his phone wouldn’t stop vibrating. As the host of a fundraiser for Rep. Andy Barr, he tried to ignore the relentless stream of calls and texts as he mingled with donors and noshed on hors d’oeuvres. But then he heard a special ring reserved for one person: Donald Trump. When Donalds slinked into a backroom to answer, the President told him the news. Trump had just endorsed him to be