US-Canada trade war escalates as Trump threatens auto and steel tariffs

Trade tensions between the United States and Canada have escalated following President Donald Trump’s threat to impose 50% tariffs on Canadian-made automobiles, trucks, auto parts, and steel, effective January 1, 2027. This move follows the recent implementation of 50% tariffs on approximately $20 billion of Canadian goods, which took effect after negotiations collapsed.

In response to the initial US duties, Canadian Prime Minister Mark Carney pledged to implement “dollar-for-dollar” retaliatory levies starting September 8, targeting US steel, dairy, agricultural equipment, and electronics. The US has responded by invoking Section 338 of the Tariff Act of 1930—a provision used for the first time in history to address unequal treatment of American goods. This has led to further orders, including outright import bans on certain products scheduled for late September.

The escalating conflict creates significant uncertainty for the automotive sector. Ford, for instance, has committed billions of dollars to North American facilities, including a $2.3 billion investment in its Oakville Assembly Complex in Ontario. It remains unclear if vehicles compliant with the United States-Mexico-Canada Agreement (USMCA) will be exempt from the upcoming January auto tariffs.