Trump’s Tariff Threat to Top US Trading Partners Roils Markets

President-elect Donald Trump vowed additional tariffs on Mexico, Canada and China, shaking markets with his first specific threats to the US’s top trading partners since his election win three weeks ago.

Trump said he would impose additional 10% tariffs on goods from China and 25% tariffs on all products from Mexico and Canada, in posts to his Truth Social network on Monday.

The US dollar staged a broad advance Tuesday, with the Mexican peso and the Canadian dollar among the worst performers. US Treasuries fell, with the yield on 10-year notes rising two basis points to 4.3%, partially reversing the reaction to Scott Bessent’s nomination last week as Treasury secretary, which weighed on the dollar and boosted US bonds amid optimism of a more measured approach to trade relations.

Trump’s market-moving threats were a stark reminder that he plans to wield tariff authority, or at least threaten to use it, as leverage against allies and adversaries alike. It’s another sign of his break from the international order where low tariffs are the goal and rules exist to discourage overreach of punitive trade actions.

In his Truth Social posts, Trump cast the new import taxes as necessary to clamp down on migrants and illegal drugs flowing across borders.

He accused China of failing to follow through on promises to institute the death penalty for traffickers of fentanyl, writing that “drugs are pouring into our Country, mostly through Mexico, at levels never seen before.”