WASHINGTON (AP) — President-elect Donald Trump has selected former White House aide Brooke Rollins to lead the Department of Agriculture in his second administration. Here are some things to know about Trump’s choice and the agency that Rollins would lead if she is confirmed by the Senate.

Mexican President Claudia Sheinbaum threatened to retaliate with her own tariffs against the United States, after President-elect Trump suggested he would impose a 25 percent tax on imported goods from Mexico if her country did not stop the flow of drugs across the border. In remarks on Tuesday, Sheinbaum said that drugs were a U.S.…