A fresh line of communication has opened between Ottawa and Washington just as the trade dispute is becoming more dangerous for North America’s auto industry. Canada’s minister responsible for U.S. trade, Dominic LeBlanc, and U.S. Trade Representative Jamieson Greer have been in contact and are expected to speak again, even as President Donald Trump’s threatened 50% tariff on Canadian autos, trucks and parts remains slated for January 1, 2027. The call comes after Canadian retaliatory tariffs took effect and Washington answered with new import restrictions and procurement pressure. That makes the next conversation important, but not necessarily a breakthrough: the two governments are still trying to determine whether there is a workable path back to formal negotiations while the broader CUSMA relationship remains unsettled.
The Communication Channel Is Open, but Formal Talks Have Not Restarted
The most important development is not that Canada and the United States have restarted full negotiations; they have not. It is that the senior officials responsible for the relationship are talking after a breakdown. Reuters reported that Greer and LeBlanc had spoken over the previous couple of days and were expected to speak again in the coming days to explore whether an alternative path exists.
That distinction matters. A ministerial call can lower temperatures, test compromises and clarify what each side would need before formal bargaining resumes. LeBlanc has also said publicly that he remains in contact with Greer about a path forward. For manufacturers, investors and workers, even a limited reopening of the channel is meaningful because the dispute has moved beyond rhetoric into tariffs, import bans and government procurement. The next call is best viewed as a diplomatic pressure valve rather than evidence that a deal is close.
Trump’s 50% Auto-Tariff Threat Remains on the Table
The auto threat hanging over the conversation is severe. Trump has said tariffs on Canadian cars, trucks and automotive parts would rise to 50% on January 1, 2027, doubling the 25% auto tariff regime already in place. A U.S. official told Reuters this week that the threatened increase remains in effect, keeping a hard deadline in front of negotiators.
The current 25% U.S. tariff system already changed the economics of cross-border vehicle production. Under the Section 232 framework introduced in 2025, qualifying Canadian and Mexican vehicles can have the levy applied only to their non-U.S. content when importers document the U.S. share. That means the tariff is not simply a flat charge on every Canadian-built vehicle today. A future 50% rate, depending on its design, could greatly magnify the cost of the same supply chains. For automakers, the uncertainty itself complicates pricing, sourcing and investment decisions months before January arrives.
Canada’s Auto Industry Has Enormous Exposure to the U.S. Market
Canada’s exposure is concentrated because its auto industry is built to export. The Canadian Vehicle Manufacturers’ Association says 1.294 million vehicles were produced in Canada in 2024, while only a small share was consumed domestically. Vehicles were Canada’s second-largest export by value that year at $46.5 billion, and 92% of those vehicle exports went to the United States.
That dependence turns a tariff dispute into an employment issue. The association estimates auto manufacturing supports 105,600 direct jobs in Canada and more than 603,500 direct and indirect jobs. Most assembly activity is concentrated in Ontario, where communities from Windsor through the Greater Toronto Area have grown around plants, tool-and-die shops, logistics firms and parts suppliers. A higher U.S. tariff would therefore reach beyond corporate balance sheets. It could influence production schedules, overtime, supplier orders and future model allocations in places where a single assembly plant anchors an industrial network.
The Supply Chain Does Not Stop at the Border
The Canadian and U.S. auto industries are difficult to separate because production was designed around repeated border crossings. Industry data note that some components can cross the Canada-U.S.-Mexico borders as many as eight times before final assembly. In practice, a transmission, stamping or electronic component may accumulate value in several locations before it becomes part of a finished vehicle.
Research from Ivey Business School underscores how concentrated that system remains. In 2024, the United States accounted for 96% of Canadian finished-vehicle and chassis exports and about 90% of Canadian auto-parts exports. Yet Canada does not simply run a one-way automotive surplus: Ivey found Canada had an overall automotive trade deficit with the United States once finished vehicles, bodies, trailers and parts were combined. That is why tariffs can rebound across the border. A measure intended to penalize Canadian production can raise costs for U.S. factories that depend on Canadian inputs.
CUSMA Has Been an Important Shock Absorber for Automakers
CUSMA has acted as a partial shock absorber for the auto sector. TD Economics found that more than 97% of vehicles imported into the United States from Canada in 2025 were compliant with the trade agreement, while about 72% of Canadian auto-parts imports met the same standard. Compliance matters because the existing U.S. tariff rules give qualifying North American products favourable treatment than non-compliant imports.
For Canadian vehicles, the 25% U.S. auto tariff can be limited to the value of content not produced in the United States when the required documentation is accepted. USMCA-compliant parts have also benefited from exemptions under existing auto-parts rules. These details explain why rules of origin are central to the dispute: a vehicle can be assembled in Ontario while containing U.S. value. If future rules reduce those protections or apply a higher rate to a broader base, the financial hit could exceed the headline rate.
Canada’s New Counter-Tariffs Add Leverage — and New Costs
Ottawa entered the latest round of talks with leverage in force. Canada imposed retaliatory tariffs on September 8 covering C$27.6 billion of U.S. imports, matching the value of the U.S. measures targeted by Washington. The government set rates of 15%, 25% and 50% across products including steel, dairy, appliances, agricultural equipment, pulp and paper, and electronics.
The policy is designed to make the cost of escalation visible on the American side of the border, as well as in Canada. Because the target list spans industrial goods, effects can reach U.S. exporters, Canadian importers and buyers who face higher landed costs. Ottawa has described the response as dollar-for-dollar retaliation, while Prime Minister Mark Carney has argued that Canada must protect workers and businesses while avoiding escalation for its own sake. The call therefore begins from a tougher position than earlier discussions: both governments now have measures causing commercial disruption today.
Washington Has Expanded the Fight Beyond Ordinary Tariffs
Washington’s response has widened the dispute beyond tariffs. The White House announced new restrictions on September 8 that include import bans on specified Canadian alcohol, dairy-related goods and large motorcycles, taking effect September 29. It changed the list of Canadian products subject to Section 338 tariffs, with additions and removals scheduled for September 15.
Trump also directed the General Services Administration, working with the U.S. Trade Representative, to remove Canadian-origin products from its Multiple Award Schedules unless Canada provides what the administration calls full reciprocity. The White House says the schedules account for more than $50 billion annually, although that figure is not the value of Canadian goods currently sold through them. The moves show how quickly the dispute is spreading into market access and public procurement. The next Greer-LeBlanc call is therefore broader than an argument over one tariff rate: several pressure points now require urgent attention at once.
The Dispute Is Colliding With an Unsettled CUSMA Review
The stakes are larger because the dispute is unfolding while CUSMA is in an uncertain review cycle. On July 1, the United States declined to renew the agreement in its current form during the joint review. U.S. Trade Representative Greer said Washington would continue engaging Canada and Mexico over shortcomings in the pact, while confirming that the agreement remains in force.
Under the review mechanism, failure to agree on an extension does not terminate CUSMA immediately. Instead, annual reviews continue, and the agreement can still be extended later if all three countries agree; absent an extension, its term runs to 2036. For companies deciding where to build a plant or source a component, that distinction matters. Existing rules still matter today, but long-term certainty has weakened. The current tariff confrontation risks becoming intertwined with the broader question of what North American trade rules will look like several years from now.
Political Support and Economic Dependence Are Pulling in Opposite Directions
Both governments are negotiating under political pressure, but the pressures are different. Reuters reported that only 20% of Americans approved of Trump’s tariffs on Canadian goods in a Reuters/Ipsos poll, while an Angus Reid poll this week put Carney’s job approval at 62%, up 11 points from August. The numbers give Ottawa some room to resist, while suggesting U.S. tariff policy remains contentious at home.
Economic exposure pulls in the opposite direction. Canadian and U.S. government data cited by Reuters show Canada has sent 68% of its exports to the United States this year, and 80% of those shipments moved duty-free because of CUSMA exemptions. That dependence means prolonged conflict can be expensive for Canada even with public support for a response. For Washington, the calculation includes exporters and manufacturers in states tied to Canadian trade. The next call sits within that tension between political resolve and commercial cost.
The Immediate Goal May Be De-Escalation, Not a Grand Deal
The realistic success for the next call would be modest: prevent immediate escalation and identify a route back to negotiations. Reuters says U.S. officials expect Greer and LeBlanc to speak again to see whether an alternative path exists. That language suggests the first task is rebuilding a negotiating framework, not finalizing a settlement in one conversation.
Tests will show whether the contact is producing results. One is whether Washington clarifies or softens the threatened 50% auto tariff before January. Another is whether either side pauses retaliatory measures while officials talk. A third is whether the governments separate urgent sector disputes from the longer CUSMA review, giving automakers and suppliers more certainty. None of those outcomes is guaranteed. Keeping senior trade officials engaged matters because the alternative is a cycle in which every tariff invites another restriction. For an integrated auto market, even limited de-escalation would have immediate practical value.
