US trade partners, industry groups warn Trump tariffs would harm all parties

(Reuters) -Officials from Mexico, Canada and China and major industry groups warned that U.S. President-elect Donald Trump's threat of hefty tariffs on goods would harm the economies of all involved, causing inflation to spike and damaging job markets.

The news roiled currency, bond and equity markets on Tuesday, as the three countries are the U.S.'s largest trading partners. Mexico and Canada are particularly intertwined in U.S. auto production and energy output.

Trump's plan to impose a 25% tariff on Canadian and Mexican imports does not exempt crude oil, two sources familiar with the plan told Reuters on Tuesday.

Leaders and other top officials urged cooperation and dialogue in their initial reactions to Trump's surprise announcement on Monday for tariffs on goods from Canada and Mexico and an additional 10% levy on Chinese goods until the three countries clamp down on the flow of illicit drugs and migrant border crossings.

"To one tariff will follow another in response and so on, until we put our common businesses at risk," Mexican President Claudia Sheinbaum said during a regular press conference. Sheinbaum said she planned to send a letter to Trump and would seek a call with him to discuss the issue.

A Bank of Canada official said that any move by Trump to deliver on the threat would reverberate on both sides of the U.S. northern border.

"What happens in the U.S. has a big impact on us, and something like this would clearly have an impact on both economies," Deputy Governor Rhys Mendes said during an audience question-and-answer session in Charlottetown, Prince Edward Island.

Earlier, a spokesperson for China's embassy in Washington said: "No one will win a trade war or a tariff war."

The three countries shipped a total of more than $1 trillion of goods to the United States in the first nine months of the year, led by Mexico and followed by China and then Canada, according to U.S. Commerce Department data as of September.

Tariffs are paid by the companies that import goods, even though Trump frequently erroneously states that tariffs would be imposed on the foreign nations in question.

The threatened levies would appear to violate the terms of the U.S.-Mexico-Canada Agreement (USMCA) on trade. The deal, which Trump signed into law, took effect in 2020 and continued the largely duty-free trade between the three North American countries; the deal sunsets in 2026.

Warren Maruyama, former general counsel for the U.S. Trade Representative under President George H.W. Bush, said Trump's threat could be acted on with relative ease by declaring a national emergency, which would unlock the International Emergency Economic Powers Act.