President-elect Donald Trump announced Monday his administration’s intention to impose significant tariffs on imports from Mexico, Canada, and China, a key campaign promise that could disrupt global trade relationships.

In a Truth Social post, Trump outlined plans for a 25% tariff on all products imported from Mexico and Canada, citing the fentanyl crisis and illegal immigration as driving factors.

“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,” Trump wrote. “This Tariff will remain in effect until such time as Drugs, in particular Fentanyl, and all Illegal Aliens stop this Invasion of our Country!”

Trump issues a threat to impose a 25% tariff on all imports from Canada and Mexico on the day he takes office. pic.twitter.com/aoCYdeecmT

— Nick Timiraos (@NickTimiraos) November 25, 2024

Trump also highlighted intentions to raise tariffs on China.

“I have had many talks with China about the massive amounts of drugs, in particular Fentanyl, being sent into the United States — But to no avail,” he wrote. “Until such time as they stop, we will be charging China an additional 10% Tariff, above any additional Tariffs, on all of their many products coming into the United States of America.”

Mexico and Canada, the United States’ top trading partners, account for nearly 30% of its trade volume. Sectors such as vehicle manufacturing, dairy, paper products, and building materials could face significant disruption if the tariffs are implemented.

During a September presidential debate against Kamala Harris, Trump reaffirmed his stance, saying, “Other countries are going to finally, after 75 years, pay us back for all that we’ve done for the world, and the tariff will be substantial.”

The proposed tariffs may conflict with the U.S.-Mexico-Canada Agreement (USMCA), which Trump negotiated during his first term and implemented in July 2020. Arturo Sarukhan, Mexico’s former ambassador to the U.S., noted the measures would likely violate the trade pact.