“A wide array of House and Senate Republicans are not yet ready to endorse President Trump’s bid for a second term, a reflection of the deep uncertainty on Capitol Hill over his political standing amid growing problems at home and abroad,” CNN reports. “In interviews with a cross-section of more than two dozen GOP lawmakers, ranging from rank-and-file members, conservatives and party leaders, many refused to say they’d back Trump’s re-election bid — a surprise declaration given that members of Congress are typically quick to endorse sitting presidents of their own party without hesitation.