The president-elect’s opening salvo in trade and border talks with the United States’ neighbors is casting a harsh light on the North American alliance.
The president-elect said that he would impose the across-the-board tariffs on Day 1 and that they would stay in place until Canada, Mexico and China halted the flow of drugs and migrants.
Foreign leaders have rushed to ingratiate themselves with Donald J. Trump in recent days, nervously recalling the clashes, insults and feuds of his first presidency.