President-elect Donald Trump's threat to impose tariffs on Canada, China and Mexico on the first day of his administration could dramatically raise prices for Americans on everything from cars to clothes to oil.

President-elect Donald Trump announced Monday he plans to impose a 25% tariff on all products coming into the U.S. from Mexico and Canada as one of his first acts back in the White House. On the campaign trail, Trump frequently touted tariffs as a way ...

Mexico and Canada are the United States’ top two trading partners, accounting for nearly 30% of trade volumes.