Automakers and parts suppliers would struggle if President-elect Donald J. Trump followed through on his threat to impose 25 percent tariffs on imports from Canada and Mexico.

MEXICO CITY (AP) — President Claudia Sheinbaum suggested Tuesday that Mexico could retaliate with tariffs of its own, after U.S. President-elect Donald Trump threatened to impose 25% tariffs on Mexican goods if the country doesn’t stop the flow of drugs and migrants across the border.

Donald Trump says he will impose a 25% tariff on goods coming from Mexico and Canada, plus an extra 10% on Chinese goods.