In his rambling press conference at Mar-a-Lago on Tuesday, Donald Trump said some very curious things, to put it mildly. One claim about Jimmy Carter, which he repeated twice, is just wrong. Following up on his recent threats to retake control of the Panama Canal if Panama doesn’t lower shipping fees and eliminate any Chinese involvement in managing the passageway, the president-elect asserted that Carter lost his reelection bid in 1980 primarily...