President-elect Donald Trump took to social media on Monday, vowing to slap a 25% tariff on Canadian and Mexican goods coming into the United States on day one of his new administration until the countries agree to curb their,

If they are imposed, the tariffs will hurt American consumers most of all. The North American supply chain is integrated; nearly $1trn-worth of goods crossed the northern and southern borders of the United States last year.

Cars, apparel, electronics and more could see prices go up if President-elect Donald Trump follows through on his pledge to impose sweeping new tariffs on imports from Mexico, Canada and China.

Donald Trump threatened to impose sweeping new tariffs on Mexico, Canada and China as soon as he takes office. Here's what to know.