Summary of Key Points
The Trump administration has threatened to impose 50% tariffs on Canadian cars, trucks, auto parts, and steel starting in 2027, with zero tariffs for products manufactured in the United States. The aim is to encourage the automotive industry to return to the U.S., but this move could disrupt the North American supply chain. Canada is particularly sensitive to this change, as it fears being reclassified from a “supply chain partner” to an “external supplier.” Japanese companies with significant investments in Canada (such as Toyota and Honda) could be the biggest victims. Moreover, U.S. automotive manufacturing employment data indicates that the actual benefits of the industry’s return have not materialized.
I. The “Hidden Motives” Behind the Tariff Threat: Forcing Companies to Move Factories Back to the U.S.
The core logic of Trump’s approach is straightforward: “If you don’t produce in the U.S., we’ll impose high tariffs on you.” Previously, the U.S. levied 50% tariffs on Canadian steel and 25% on auto-related products, while allowing products that complied with the USMCA (United States-Mexico-Canada Agreement) to be exempted. Now, all related products are subject to 50% tariffs, and only those manufactured in the U.S. are exempt.
The target companies include Ford, which is investing billions of dollars to upgrade its facilities in Ontario, Canada, with plans to produce pickups and commercial vehicles by 2026. Under the previous rules, these vehicles would have been exempt from tariffs. However, the U.S. suddenly decided to exclude medium and heavy trucks from the exemption, clearly aiming to prevent Ford from producing in Canada and forcing it to move its factories back to the U.S. This is what Trump refers to as “industry revitalization” — using tariffs as a tool to compel companies to relocate.
II. The North American Supply Chain Is About to Be Disrupted: Cross-Border Parts May Be Subject to Repeated Taxations
The North American automotive supply chain is highly interconnected. For example, a car’s parts may be transported from the U.S. to Canada for processing, then to Mexico for assembly, and finally back to the U.S. for sale, involving multiple cross-border shipments. If 50% tariffs are imposed, the same parts could be taxed each time they cross the border, significantly increasing costs.
More importantly, the U.S. wants to change the rules of the USMCA: previously, 75% of parts had to be sourced from North America to be exempt from tariffs; now, the requirement has been raised to 82%, and at least 50% must be manufactured in the U.S. This is a devastating blow to Canada, as it would effectively marginalize the Canadian automotive industry and other manufacturing sectors if only U.S.-produced parts are considered.
III. Japanese Companies Are the Biggest Victims: They Have More Production Capacity in Canada Than U.S. Companies
The Canadian automotive industry has changed significantly over the past decade. The share of production by the “Big Three” U.S. automakers (Ford, General Motors, Stellantis) has dropped from 56% to 23%, while Toyota and Honda’s share has risen from 44% to 76.5%. In 2025, Toyota and Honda produced 1.27 million vehicles in Canada, more than the combined output of the three U.S. automakers.
As a result, Japanese companies are the most concerned about Trump’s tariff threats. Their stock prices surged by more than 4% during previous negotiations, but they have dropped by 1.7% and 3.5% respectively in the past two days as the threats intensified. With substantial investments in Canada, these companies would face substantial cost increases if the tariffs are implemented, potentially leading to reduced profits.
IV. The “Hype of Industry Revitalization” Fails to Deliver: U.S. Automotive Employment Has Declined
Despite Trump’s much-vaunted “industry revitalization,” the data tells a different story. According to the U.S. Bureau of Labor Statistics, the number of jobs in the automotive and parts sector in July was 964,500, down from 975,300 in March 2025, a decrease of more than 1%.
Why? The supply chain is not so easy to relocate; companies must consider costs related to factories, workers, and logistics. Moreover, Trump’s tariff policies are unpredictable, constantly changing, which creates additional risks for investment. This kind of political uncertainty is even more detrimental to the supply chain than the tariffs themselves.
Conclusion
Trump’s tariff threats are ostensibly aimed at Canada, but the real goal is to keep industries in the U.S. However, this approach could disrupt the North American supply chain for decades and harm Japanese companies with investments in Canada. Even U.S. employment data has not improved as a result. The next step will depend on how Canada responds and whether there will be any changes before the mid-term elections in the U.S. For now, it seems that this tariff war will only cause more harm to various industries.