Washington Demands Vehicles Be 50% American-Made as Canada Is Left Out of Auto Talks

North America’s auto industry was built on a simple premise: a vehicle assembled in one country could draw parts, labour and investment from all three. Washington is now challenging that model with a proposal that would require half the value of qualifying vehicles to come specifically from the United States, rather than simply from anywhere in Canada, Mexico or the U.S.

The demand surfaced in bilateral negotiations between Washington and Mexico that have proceeded without Canada at the detailed bargaining table. Another U.S.–Mexico round is planned for September, while Ottawa faces the unsettling prospect that rules affecting Canadian factories could be shaped before Canadian negotiators are fully brought into the discussion. For workers and suppliers concentrated in Ontario, the dispute is not an abstract trade argument. It could influence where future models, batteries, engines and investment are placed.

Washington Wants to Rewrite the North American Formula

The U.S. proposal is more ambitious than the headline alone suggests. Washington has sought to lift the regional-content threshold for vehicles from 75% to 82%, while also requiring 50% of a vehicle’s value to originate in the United States. Current CUSMA rules treat Canadian, Mexican and American content as part of one North American pool. The new approach would create a country-specific floor inside that regional system, giving U.S. production a protected share that neither Canada nor Mexico currently receives.

That distinction matters because preferential access is the prize. Automakers that meet the rules can qualify for favourable treatment when vehicles move across North American borders. Those that fail must either alter sourcing, change where models are assembled or absorb tariffs. The proposal has not been finalized, and its technical details remain subject to negotiation. Still, it signals Washington’s broader objective: use trade rules not only to keep production in North America, but to pull a larger portion of that production into American plants and suppliers.

Canada Is Missing From the Room, Not the Agreement

Canada has not been excluded from CUSMA itself. Ottawa participated in the formal joint review on July 1, and the agreement remains a trilateral pact. What Canada has been excluded from are the detailed bilateral rounds in which American and Mexican officials have been negotiating automotive content, steel, aluminum, labour and other changes. The latest round ended with plans to meet again in Washington in early September, again without Canada at the table.

That creates a strategic risk for Ottawa. If the United States and Mexico narrow their differences first, Canada could later face a framework that is already politically difficult to reopen. Auto-industry officials told Reuters earlier in the process that Washington could seek agreement with Mexico and then present the result to Canada. It would not be the first time a three-country negotiation developed through bilateral pressure, but the stakes are unusually high because the proposed rule directly affects Canadian content. Canada is still legally essential to any final trilateral change, yet being necessary at the finish line is not the same as shaping the route.

Why the 50% Demand Is More Radical Than It Sounds

CUSMA’s existing automotive rules are already among the most demanding in global trade. A passenger vehicle generally needs 75% North American regional value content to receive preferential treatment, up from 62.5% under NAFTA. The agreement also requires 40% of a passenger car’s value, and 45% for a light truck, to come from plants meeting a wage threshold of at least US$16 an hour. Steel, aluminum and designated core parts are covered by additional sourcing requirements.

Washington’s 50% American-content demand changes the philosophy behind those rules. The current system encourages regional production and gives a Canadian engine, Mexican wiring harness or American transmission value within the same continental calculation. A national floor would divide that shared production map into separate claims. Even a vehicle that is overwhelmingly North American could lose preferential treatment if its U.S. share fell below the proposed threshold. The debate is therefore not simply about raising a percentage. It is about whether CUSMA continues rewarding a continental supply chain or begins reserving its largest benefit for one country.

One Vehicle Can Cross the Border Repeatedly

The auto sector does not operate like a row of self-contained national factories. Canadian government trade material notes that vehicles and their components can cross the Canada–U.S. border seven or even nine times before final assembly. A part may be stamped, machined, coated, fitted into a larger system and then returned across the border as work is completed at specialized facilities. Each crossing adds value, but it also makes the finished vehicle difficult to divide neatly by nationality.

A 50% U.S. requirement could force companies to trace and reorganize that chain with far greater precision. Consider a Canadian-made component containing American steel that is combined with another part in Ontario and installed in a vehicle in Michigan. Under a regional rule, the North American origin is the central question. Under a country-specific rule, firms must determine how much value belongs to each side of the border and whether the final U.S. share clears the target. That administrative challenge would arrive alongside the larger commercial decision of whether long-standing suppliers should be replaced.

Ontario Workers Carry Most of Canada’s Exposure

Canada’s exposure is concentrated but economically significant. The federal government says Canada produced more than 1.2 million passenger vehicles in 2025, with over 90% of Canadian-made vehicles and 60% of Canadian-made parts exported to the United States. The industry supports about 125,000 direct jobs, roughly 80% of them in Ontario. Federal industry data also put the sector’s 2024 contribution to Canadian GDP at $16.8 billion and estimate that it indirectly supported approximately 427,000 additional jobs.

Those numbers become more tangible in communities built around assembly and parts production. A sourcing change at one major plant can affect tool-and-die shops, logistics firms, maintenance contractors and businesses serving shift workers. Statistics Canada estimated that U.S. demand for Canadian automobile and light-duty vehicle exports accounted for about $4 billion in Canadian value added and roughly 27,000 jobs in 2024. The pressure is already visible: Canadian exports of motor vehicles and parts fell 10.7% in the first quarter of 2026, reaching their lowest quarterly value since the third quarter of 2014.

Automakers Face a Costly Build-or-Pay Decision

For automakers, compliance is a calculation rather than an automatic choice. A company can redesign sourcing to meet the rule, shift production to another plant, reduce exports of a model or decide that paying the tariff is cheaper. The U.S. International Trade Commission found that under the existing CUSMA rules, sourcing changes averaged about US$200 per vehicle for models that changed suppliers to comply. Where steel sourcing changed, the reported average variable-cost increase was US$166.38 per vehicle.

The proposed U.S.-specific threshold would add another layer to that calculation. Since April 2025, Canadian-made vehicles have faced a 25% U.S. tariff on their non-U.S. content, while U.S. content in qualifying vehicles is exempt. A 50% American-content rule could deepen the incentive to move components or assembly south, but relocation is neither quick nor free. Factories require tooling, supplier qualification, trained workers and model allocations planned years ahead. Some firms may therefore accept higher costs temporarily, while others could delay investment until the rules become clearer. That uncertainty can be damaging even before a final agreement is signed.

Mexico’s Resistance Could Help Canada

Mexico’s resistance may offer Canada breathing room. Mexican officials have treated the 50% U.S. requirement as a non-starter, arguing that even a small country-specific mandate could become a precedent for larger demands later. Mexico is also pressing Washington to reduce its Section 232 tariffs of 25% on autos and 50% on steel and aluminum before expecting major concessions. The two sides reported progress on steel, aluminum and reducing reliance on Asian imports, but they remained divided on automotive content.

Washington’s motivation extends beyond Canada. U.S. Trade Representative Jamieson Greer has said the administration’s leading goal is to reduce trade deficits and reshore manufacturing. The U.S. goods deficit with Mexico reached $197 billion in 2025, while its deficit with Canada fell to $48.3 billion. That helps explain why Mexico is receiving intensive bilateral attention. For Canada, however, the danger is that a compromise designed around the much larger U.S.–Mexico imbalance could still rewrite the rules for Canadian plants. Mexico’s refusal strengthens Ottawa’s position only as long as both countries continue opposing a country-specific formula.

Ottawa Needs Leverage Before September

Ottawa’s immediate task is to prevent temporary exclusion from becoming a permanent disadvantage. CUSMA remains in force until 2036, despite Washington’s July 1 decision not to extend it for another 16 years. That decision triggered annual reviews rather than an instant expiry. Canada therefore retains legal access under the existing agreement while negotiations continue, although separate U.S. tariffs have weakened the certainty that businesses once associated with the pact.

Canada has several forms of leverage, but none is painless. It can coordinate with Mexico, challenge U.S. measures through trade mechanisms, maintain countertariffs, tie domestic market access to Canadian production and accelerate export diversification. Ottawa has already kept retaliatory tariffs on certain U.S.-made vehicles and introduced an auto strategy aimed at protecting production and attracting next-generation investment. The most important objective, however, is a seat in the detailed negotiations before a U.S.–Mexico compromise hardens. Another bilateral round is scheduled for September, and American officials have indicated that the hardest CUSMA issues may extend into 2027. For Canadian auto communities, the longer uncertainty lasts, the more investment decisions could be made elsewhere.