On the eve of the Iowa caucuses, Governor Ron DeSantis of Florida, a former ally of Donald J. Trump, delivered a blistering critique of the former President, implying that Trump prioritizes personal loyalty over the nation’s welfare. In 2017, Donald Trump, who was then serving as President, threw his support behind Ron DeSantis in the race for Florida’s governorship. This endorsement from Trump was a significant boost for DeSantis, a tea-party conservative, enabling him to surpass the right-wing GOP candidate Adam Putnam, who was serving as Florida’s agriculture commissioner at the time, Politico reported. “Congressman Ron DeSantis is a brilliant...