President-elect Donald Trump on Monday pledged big tariffs on the United States’ three largest trading partners – Canada, Mexico and China – detailing how he will implement campaign promises that could trigger trade wars.

Trump, who takes office on January 20, 2025, said he would impose a 25% tariff on Canada and Mexico until they clamp down on drugs, particularly fentanyl, and migrants crossing the border, in a move that would appear to violate a free-trade deal.

Trump also outlined “an additional 10% tariff, above any additional tariffs” on China, in some of his most specific comments on how he will implement his economic agenda since winning the November 5 election on promises to “put America first”.

“On January 20th, as one of my many first Executive Orders, I will sign all necessary documents to charge Mexico and Canada a 25% Tariff on ALL products coming into the United States, and its ridiculous Open Borders,” he said in a post on Truth Social.

While migrant arrests reached a record during President Joe Biden’s presidency, straining US border enforcement, illegal crossings fell dramatically this year as Biden instituted new border restrictions and Mexico stepped up enforcement.