Stellantis subsidiary FCA Canada and Magna International, which makes car parts like electric vehicle battery enclosures, both reported lobbying federal Finance Minister Francois-Philippe Champagne recently to discuss trade within North America.

The companies join a long line of carmakers that are voicing concerns about the impact of U.S. President Donald Trump’s 25 per cent tariffs on steel, aluminum and assembled vehicles imported into the U.S. The North American auto manufacturing industry is highly integrated. Car parts may cross the borders between Canada, Mexico and the United States many times before a vehicle is completed, meaning Trump’s duties will increase costs for manufacturers and consumers.