Canada’s latest trade fight with Washington carries a risk that extends beyond the economic damage caused by tariffs. The pressure is landing very differently from one province to another.
The Trump administration’s latest measures, scheduled to take effect August 19, would impose 50% tariffs on selected Canadian goods and, unusually, would not spare products simply because they comply with CUSMA. The legal authority being used can also distinguish between regions within a foreign country. That has raised concerns among trade and political experts that Washington could eventually reward some provinces while maintaining pressure on others. With British Columbia, Quebec and Ontario facing considerably greater exposure than Alberta and Saskatchewan, maintaining a single Canadian negotiating position could become increasingly difficult if provincial jobs and industries are placed on the line.
A Tariff Tool Built for Province-by-Province Pressure
What makes the latest tariff threat particularly significant is not merely the 50% headline rate. The Trump administration is invoking Section 338 of the Tariff Act of 1930, an obscure provision that allows the United States to impose additional duties when it believes another country is discriminating against American commerce. The White House announced three proclamations on July 20 covering products ranging from wine and spirits to cement and hockey-related goods, with the measures scheduled to begin August 19. Unlike many of Washington’s earlier Canadian tariffs, covered goods would not automatically escape the duties because they qualify under CUSMA.
The provision contains another feature attracting attention in Canada. University of Calgary trade-policy researchers Carlo Dade and Sharon Zhengyang Sun note that Section 338 allows presidential action to be limited to a political subdivision of another country. In Canada’s case, that could theoretically mean individual provinces. Washington has not announced province-specific tariffs, but the authority gives the administration considerably more flexibility than a single nationwide tariff. Researchers warn that selective exemptions or concessions could eventually create an incentive for individual premiers to seek their own relief rather than maintain a common Canadian front.
The Same 50% Tariff Would Not Feel the Same Across Canada
A nationwide tariff can sound uniform while producing remarkably uneven consequences. University of Calgary economist Trevor Tombe estimates the latest measures would affect roughly 13.7% of British Columbia’s exports to the United States, compared with 10.8% for Quebec and about 9% for Ontario. In Alberta and Saskatchewan, the share is closer to 1%, largely because major exports such as energy and potash are excluded from this particular round. That disparity means a measure announced in Washington can quickly become a much bigger political emergency in Victoria or Quebec City than in Edmonton or Regina.
The divide becomes even clearer when existing U.S. sectoral tariffs are added to the picture. Earlier University of Calgary research estimated that approximately 58% of Ontario’s U.S.-bound exports and 55% of Quebec’s were exposed to existing or potential Section 232 measures, compared with much lower exposure in several resource-heavy provinces. Those figures refer to a different tariff authority, but they illustrate the broader problem: Canada’s economy is national while its export industries are highly regional. A government protecting auto jobs in Ontario, a mill in British Columbia or an energy producer in Alberta may therefore see the same trade dispute through very different economic lenses.
British Columbia Has More to Lose From This Round
British Columbia stands out as the province with the greatest estimated exposure to the new Section 338 measures. Canada West Foundation analysis places the affected share of B.C.’s U.S.-bound exports at roughly 14%, with products such as electrical equipment and various wood and paper products among the areas potentially facing additional pressure. The province already has extensive experience with trade disputes because forest products have repeatedly been caught in Canada-U.S. tensions. B.C. government figures show that nearly three-quarters of the province’s softwood lumber exports went to the United States in 2024, although softwood lumber itself is subject to a separate trade regime rather than simply falling under the new tariff list.
For a large multinational company, an additional tariff may be absorbed across several markets. For a specialized manufacturer in a smaller B.C. community, the choices can be much narrower: accept smaller margins, raise the price charged to an American customer, find a new buyer quickly or reduce production. That helps explain why British Columbia may favour a more aggressive federal response than provinces facing little direct exposure. The province’s vulnerability is not simply about the value of exports; it is about how concentrated jobs can be in particular communities and industries.
Alberta and Saskatchewan Have Reasons to Guard Their Exemptions
The situation looks different on the Prairies. Energy and potash are explicitly excluded from the latest Section 338 tariff measures, leaving Alberta and Saskatchewan with only about 1% of their U.S.-bound exports exposed to the new duties, according to current estimates. That exemption is economically significant. Canada exported approximately 4.3 million barrels of crude oil per day in 2025, according to the Canada Energy Regulator, with about 90% going to the United States. Alberta produces the overwhelming majority of Canadian crude, making dependable access to the American market especially important to the province.
That creates a complicated incentive when Ottawa considers retaliation. Ontario or British Columbia could regard energy exports as valuable leverage over Washington. Alberta, however, would bear much of the cost if that leverage involved restricting or taxing oil shipments. Alberta Premier Danielle Smith and Saskatchewan Premier Scott Moe have opposed using energy exports as a bargaining chip, while simultaneously supporting efforts to resolve the broader dispute. Neither position is difficult to understand from a provincial perspective. The danger for Ottawa is that a tariff strategy does not need to damage every province equally to become politically effective; it only needs to make their preferred responses sufficiently different.
Alcohol Gives Washington a Direct Line Into Provincial Politics
Alcohol provides perhaps the clearest example of how the Canada-U.S. dispute can move from international diplomacy into provincial politics. Liquor distribution is largely controlled by provincial and territorial governments. After the first major tariff confrontation with Washington in 2025, provinces and territories removed American alcohol from government-controlled distribution systems as part of Canada’s retaliation. Alberta and Saskatchewan subsequently restored U.S. alcohol sales, while restrictions remained elsewhere. The White House says American alcoholic-beverage exports to Canada fell sharply during the dispute, citing a decline of roughly 81% over a 12-month comparison period.
The arrangement matters because Ottawa cannot simply order every provincial liquor board to return American bourbon, wine or beer to store shelves as part of a federal trade settlement. Reuters reported that the issue has consequently become part of negotiations even though the federal government does not control the final provincial decisions. The symbolism can be powerful. A bottle disappearing from a government liquor store may appear trivial compared with an auto plant or oil pipeline, but it gives Washington a policy issue on which Canadian provinces have already made different choices. Selective U.S. concessions could deepen that distinction.
Ontario’s Auto Economy Creates a Different Set of Stakes
Few provinces have as much experience with the immediate consequences of U.S. trade policy as Ontario. The provincial government says its auto sector employed nearly 100,000 people in 2025, while the federal government estimates that more than 90% of Canadian-made vehicles are exported to the United States. Canadian vehicle producers have already faced separate American automotive tariffs, meaning the newest measures arrive on top of an existing period of uncertainty for manufacturers, suppliers and communities dependent on cross-border production.
The integrated nature of the industry makes Ontario especially sensitive to policies that interfere with cross-border movement. Parts can cross the Canada-U.S. border multiple times before a finished vehicle reaches a dealership, and decisions made by automakers can affect suppliers far beyond the assembly line. Ontario Premier Doug Ford has repeatedly advocated a tougher response to U.S. tariffs, including reciprocal measures, while some western premiers have been more cautious about retaliation that could affect their own exports. Those differences do not necessarily mean the provinces disagree about the goal of protecting Canadian industry. They illustrate how the economic cost of achieving that goal can fall unevenly depending on where a worker lives and what that province sells.
Quebec Faces a Threat to Smaller Manufacturing Communities
Quebec’s estimated exposure to the newest tariff round is approximately 10.8% of its exports to the United States, placing it behind British Columbia but ahead of most of the country. The province is also already heavily exposed to other U.S. sectoral trade measures. University of Calgary research calculated that about 55% of Quebec’s U.S.-bound exports were covered by existing or potential Section 232 tariffs, reflecting its large presence in industries such as aluminum and manufacturing. The newest tariffs therefore risk layering another source of uncertainty onto businesses that have already spent months adjusting to changing U.S. trade rules.
Quebec’s representative on Canada-U.S. trade, Louise Blais, has warned that the consequences can be particularly severe in smaller communities. She has pointed to producers of textiles, cement, wood flooring and furniture among companies worried about their ability to withstand prolonged tariffs. That distinction matters. National statistics may show that only a modest percentage of total Canadian exports is affected, yet a single factory can represent a major share of employment in a smaller town. A business with one primary U.S. customer cannot necessarily replace that market with buyers in Europe or Asia before its cash reserves run out.
Retaliation Could Divide Canada Almost as Much as the Tariffs
Washington is not the only side capable of creating uneven regional consequences. Canada’s response can do the same thing. Ontario has pushed for forceful retaliation, while British Columbia Premier David Eby has discussed Canada’s critical minerals and other strategic resources as potential sources of leverage. Alberta and Saskatchewan have opposed measures that would restrict energy exports. Each proposal could impose costs on a different part of the country, making the question of retaliation as much a federalism challenge as a trade-policy decision.
That creates a difficult calculation for Prime Minister Mark Carney’s government. A dollar-for-dollar tariff response may demonstrate resolve but can increase costs for Canadian companies importing U.S. products. Restricting strategic commodities could generate stronger pressure in Washington but hurt Canadian producers selling those commodities. Avoiding retaliation could protect some businesses while leaving tariff-hit manufacturers feeling abandoned. Provincial governments are expected to defend the workers and industries that elected them, which is precisely why an uneven U.S. tariff regime can be politically potent. Canada’s negotiating strength ultimately depends not only on how much economic pain it can withstand, but also on whether governments agree about how that pain should be shared.
A Stronger Internal Market Could Make Canada Harder to Divide
One of Canada’s best long-term defences may have little to do with Washington. More than $527 billion in goods and services already moves between Canadian provinces and territories each year, representing almost one-fifth of national GDP, according to the federal government. Ottawa has increasingly focused on eliminating internal trade and labour-mobility barriers, while provinces have pursued agreements aimed at making it easier for Canadian businesses to sell across provincial borders. Federal estimates cited in that effort suggest eliminating remaining internal trade barriers could eventually add as much as $210 billion to Canada’s economy, although the precise economic payoff depends heavily on how those barriers are measured and removed.
That will not replace the U.S. market quickly. Geography, supply chains and decades of economic integration mean Canadian companies will continue to depend heavily on American customers. But every additional customer in another province—or in Europe, Asia or elsewhere—reduces the leverage created by a single export destination. The immediate challenge is therefore maintaining provincial cooperation through the August tariff confrontation. The longer-term challenge is building an economy in which Washington has fewer regional pressure points to exploit. A tariff may begin as a border tax, but when its costs fall unevenly across a federation, its most consequential effect can eventually become political.
