Trump is threatening 100% tariffs against a bloc of nine nations including Brazil, Russia, India, China and South Africa if they act to undermine the U.S. dollar.

The president-elect’s threat to hit Canada, Mexico and China with new tariffs is already rocking business and diplomatic relationships and could topple the trade pacts he signed in his first term.

President-elect Trump’s emphatic promise of new tariffs is sharpening the debate over how he will handle the economy. It’s likely the single most important domestic issue of his second term. Trump is poised to enjoy almost perfect timing in taking the reins of an economy on the rise.

In a post on Truth Social Saturday, President-elect Donald Trump said he would impose a 100% tariff on the BRICS geopolitical coalition of non-Western countries if the group moves away from trading using the U.

The president-elect's threat comes just days after he threatened big tariffs on Mexico, Canada and China. Experts warn of higher prices.

Trump said Monday on Truth Social that one of his first executive orders would be to hit Mexico and Canada with a blanket 25% tariff. Mexico and Canada are the second and third top suppliers of goods to the U.S., according to the Office of the U.S. Trade Representative. The U.S. imports the most goods from China.

President-elect Donald Trump said he would require countries that are part of BRICS — a China- and Russia-backed group of emerging economies — to commit to not creating new currency or face 100% tariffs during his administration.

President-elect Trump on Saturday threatened the developing countries known the the BRICS bloc with "100% tariffs" if they try to move away or replace the dollar.

President-elect Donald Trump on Saturday warned the BRICS nations they will face a 100% tariff in U.S. domestic markets if they proceed with plans to create a new currency to compete with the dollar.