Trade negotiations between the United States and Canada collapsed just hours before a deadline last week, triggering new 50 percent U.S. tariffs on roughly C$28 billion worth of Canadian goods and prompting Ottawa to announce a dollar-for-dollar response.

The breakdown came after several days of intensive negotiations in Washington and after officials on both sides had suggested an agreement was close. Instead, Canadian Prime Minister Mark Carney suspended the talks and recalled Canada’s negotiating team to Ottawa, while U.S. Trade Representative Jamieson Greer accused Canada of backing away from terms that had already been negotiated.

The two governments now offer sharply different explanations for what went wrong. Washington says Canada introduced new demands and walked back commitments after the United States offered substantial tariff reductions. Ottawa says the United States changed its terms at the last minute and sought concessions that Canada considered economically unacceptable and an infringement on its ability to set its own policies.

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On Jan. 29, 2025, a truck crossed the Blue Water Bridge border crossing between Sarnia, Ontario, Canada, and Port Huron, Michigan, USA. (Image: GEOFF ROBINS/AFP via Getty Images)

What happened

The new U.S. tariffs took effect shortly after midnight on Aug. 22 after the two countries failed to finalize an agreement.

According to Reuters, the 50 percent tariffs cover approximately US$20 billion worth of Canadian exports, representing just over five percent of Canada’s exports to the United States. Products affected include wine, dairy products, furniture, cement, clothing, fishing rods, and hockey equipment. The tariffs add to existing U.S. duties affecting Canadian steel, lumber, and automobiles.

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The Associated Press similarly estimated that approximately five percent of Canada’s annual exports to the United States are covered by the new duties. AP reported that the list includes agricultural products, honey, clothing, jewelry, furniture, cosmetics, cameras, fabrics, and other goods in addition to products such as hockey sticks and wine.

Importantly, some of the products hit by the new tariffs had previously received preferential treatment under the U.S.-Mexico-Canada Agreement, or USMCA. The move adds another layer of uncertainty to the pact after the Trump administration declined on July 1 to extend it for another 16 years. USMCA remains in force, but without an extension it is now subject to annual reviews, while Trump has since said he does not care about renewing or updating the agreement.

The immediate economic impact may be concentrated in a relatively small share of overall Canadian exports, but businesses operating through the deeply integrated North American supply chain could face broader effects.

Augustine Lo, an international trade lawyer cited by the Associated Press, warned: “Nearly all industries and professions are likely to see downstream effects from this spiraling trade dispute.”

The tariffs are also notable because of the legal authority President Donald Trump used to impose them.

Trump invoked Section 338 of the Tariff Act of 1930, a provision dating to the Great Depression era that permits a president to impose duties of up to 50 percent on imports from countries deemed to discriminate against U.S. commerce. AP reported that while the authority has existed for nearly a century, this is the first time Section 338 has specifically been used to raise tariffs.

The Trump administration initially announced the Section 338 tariffs on July 20, giving the two governments roughly a month to resolve their differences.

Negotiations intensified as the deadline approached. By Aug. 21, the two sides appeared to have made considerable progress. Reuters reported that an agreement under discussion could have reduced U.S. tariffs on Canadian steel, aluminum, and automobiles while potentially bringing American alcohol back onto provincial liquor-store shelves in Canada.

But the remaining differences were not resolved.

After the talks broke down Friday night, Carney ordered Canada’s negotiators home. The United States allowed the tariffs to take effect, and a senior Trump administration official told Reuters that no additional negotiations were scheduled.

The disagreement then shifted immediately to who was responsible for the collapse.

Trump-China-Largest Compromise of Election Data in History
President Donald Trump delivers a national address from the East Room of the White House in Washington on July 16, 2026. (Image: Saul Loeb/Pool – Getty Images)

The US side: Canada backed away after Washington offered major concessions

The Trump administration argues that Canada was offered a favorable agreement but changed its position during the final stages of negotiations.

According to Reuters, U.S. Trade Representative Jamieson Greer said Canada had previously agreed to terms that Ottawa ultimately declined to finalize.

“Tonight, Canada declined to finalize the trade deal under the terms agreed earlier this week,” Greer said.

A senior Trump administration official told Reuters that the U.S. proposal would have placed Canada in a better tariff position than any other major exporter to the American market. Washington’s account is that Canada then sought additional concessions, particularly involving steel, aluminum, automobiles, and softwood lumber.

The administration says its proposed agreement would have substantially reduced tariffs affecting several of Canada’s most important industries while expanding cooperation between the two countries in other strategic areas.

The U.S. position also needs to be viewed against the reasons Washington gave when the 50 percent tariffs were first announced in July.

In its July 20 statement announcing the Section 338 action, the Office of the U.S. Trade Representative accused Canada of discriminating against American producers in three areas in particular: automobiles, dairy products, and alcoholic beverages.

Greer said the administration believed Canada had responded to U.S. efforts to reshape bilateral trade with measures that unfairly targeted American exports.

“Canada, unlike other partners and allies, continues to retaliate against the United States for its efforts to rebalance trade and protect U.S. industry,” Greer said.

USTR specifically objected to Canadian provinces removing U.S. alcohol from store shelves, Canada’s dairy-market policies, and measures Washington says limit some U.S. vehicle exports into Canada. The administration characterized those policies as discriminatory treatment that justified action under Section 338.

In Washington’s telling, the final negotiations therefore were not simply about persuading Canada to accept new U.S. tariffs. The administration was attempting to exchange tariff relief for changes to Canadian policies that it says disadvantage American businesses.

Reuters reported that the two governments had made enough progress that an agreement appeared possible only hours before talks failed. Washington says it had offered meaningful reductions to tariffs on steel, aluminum, autos, and other Canadian exports, but Canada continued seeking better terms.

Greer subsequently described the failed negotiations as a missed opportunity for Canada and said Washington was moving ahead with measures responding to Canadian retaliation.

From the U.S. perspective, then, Canada was presented with unusually favorable access to the American market but rejected the agreement because Ottawa wanted additional concessions while remaining unwilling to fully address U.S. complaints over Canadian trade barriers.

Canada disputes that account.

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Canadian Prime Minister Mark Carney addresses the World Economic Forum annual meeting in Davos, Switzerland, Jan. 20, 2026. (Image: Fabrice Coffrini/AFP via Getty Images)

Canada’s side: US changed the terms and asked for too much

Carney says Canada did make significant concessions during the negotiations, but that Washington introduced additional demands late in the process that fundamentally changed the proposed agreement.

In a detailed Aug. 22 address published by the Prime Minister’s Office, Carney said Ottawa had entered the negotiations seeking to preserve tariff-free U.S. access for most Canadian businesses, substantially reduce tariffs on strategic Canadian industries, protect smaller companies, restore stability to bilateral trade, and preserve Canada’s ability to make its own economic decisions.

Canada, he said, was willing to make compromises to obtain those goals.

Ottawa had offered to drop its remaining retaliatory tariffs on strategic U.S. sectors—particularly steel, aluminum, and automobiles—if Washington substantially lowered its corresponding tariffs to levels that would make exporting economically viable for Canadian companies.

The Canadian government was also prepared to encourage provincial governments to return American alcoholic beverages to store shelves. Carney said Ottawa was willing to make administrative changes involving Canada’s supply-management system, although it would not dismantle the system itself or change existing U.S. quotas and tariffs.

According to Carney, the negotiations became unacceptable when Washington introduced additional conditions near the deadline.

“In recent days, the U.S. proposed new terms that were uneconomic, unfair, and undermined the net benefits to Canada,” Carney said.

Carney said Ottawa was particularly unwilling to accept U.S. demands that it believed would compromise Canadian sovereignty, weaken strategically important industries, or interfere with Canadian protections for French language and culture. He said those issues had not been part of what his government was prepared to negotiate away.

That is the central difference between the two accounts.

Washington says Canada altered the bargain by seeking additional concessions after the two countries had largely settled on terms. Ottawa says it was Washington that changed the bargain by introducing new conditions at the end of the negotiations.

Carney also rejects the broader U.S. argument that the bilateral trade relationship is fundamentally unfair to the United States.

In his Aug. 22 remarks, he pointed to Canada’s role as a major supplier of energy to the United States and argued that the U.S. merchandise trade deficit with Canada is heavily influenced by American purchases of Canadian oil, natural gas, and electricity. He also said that when services are included, the wider trade relationship looks substantially different from the merchandise figures emphasized by Washington.

Rather than accept the final U.S. offer, Ottawa has chosen to retaliate.

Canada plans to impose matching tariffs beginning Sept. 8, targeting U.S. products in sectors including steel, dairy, household appliances, agricultural equipment, pulp and paper, and electronics. Carney has described the response as dollar-for-dollar retaliation intended to protect Canadian producers from U.S. competition while the American tariffs remain in place.

The Canadian government has also promised additional assistance for workers and businesses affected by the dispute.

Economic impact could spread on both sides of the border

Although the new 50 percent U.S. tariffs directly cover only a portion of Canadian exports, the economic effects could extend well beyond the products named on the tariff list because the two countries’ manufacturing, retail, agricultural, and transportation networks are deeply intertwined.

Canada is particularly exposed because of its dependence on the American market. According to Reuters, more than three-quarters of Canadian goods exports go to the United States, while Canada imports nearly half of its goods from its southern neighbor. Total U.S. trade in goods and services with Canada reached about $872.3 billion last year, making Canada one of America’s two largest trading partners.

For Canadian exporters directly affected by the new duties, the immediate problem is competitiveness. A 50 percent tariff imposed when their products enter the United States can make Canadian goods considerably more expensive for American customers unless Canadian producers slash prices and absorb part of the cost themselves.

The Canadian Federation of Independent Business (CFIB) warned on Aug. 22 that small exporters could be among the hardest hit. Its survey found that 40 percent of small Canadian exporters sell products covered by the new tariffs, while nearly one-third of those affected expect their revenues to fall by at least half.

CFIB President Dan Kelly warned:

“The impact on small businesses will be immediate and significant. A full 40 percent of small Canadian exporters will be directly hit by these tariffs.”

Machinery and equipment producers, wood and building-material companies, plastics and packaging businesses, food and beverage producers, and firms selling jewelry, art, and other specialty products are among those identified by CFIB as particularly exposed.

The damage, however, would not necessarily stop at the Canadian side of the border.

American companies that rely on Canadian materials, components, or finished products may face higher input costs or be forced to find alternative suppliers. Importers normally pay tariffs when goods enter the United States, creating pressure to absorb those additional costs, negotiate lower prices from suppliers, or pass some of the increase on to customers.

Ahead of the tariff deadline, the U.S. Chamber of Commerce warned that a prolonged escalation could affect American households, manufacturers, and workers as well as Canadian exporters. The Chamber says about 13 million U.S. jobs depend on trade conducted under the U.S.-Mexico-Canada Agreement.

“The introduction of higher tariffs would damage both economies, drive up costs for U.S. families, further disrupt critical supply chains,” the Chamber said.

Canada’s planned retaliation creates another layer of economic pressure.

Ottawa has said that beginning Sept. 8 it will impose matching tariffs on U.S. products, including goods in the steel, dairy, electronics, appliance, agricultural-equipment, and pulp-and-paper sectors. Those measures are intended to put pressure on U.S. exporters, but Canadian companies importing American products would initially face the additional costs.

CFIB noted that while about 20 percent of Canadian small businesses export, more than half import goods from the United States. The organization therefore cautioned that retaliatory measures could hurt Canadian companies even as Ottawa attempts to pressure Washington.

The overall national impact on Canada may be more limited than the headline 50 percent tariff suggests. The Financial Times reported that more than 80 percent of Canadian exports to the United States remain duty-free, and some economists do not expect the latest round of tariffs alone to derail Canada’s overall economic growth. Individual businesses and industries with heavy U.S. exposure, however, could experience much more severe effects, including lost orders, hiring freezes, reduced investment, and pressure to shift sales into other markets.

A truck with vehicles crosses the Blue Water Bridge border crossing into the United States from Sarnia, Ontario, Canada on April 3, 2025. (Image: GEOFF ROBINS/AFP via Getty Images)

The greatest risk may come if the dispute expands further into industries where production is integrated across the border—particularly automobiles.

Modern North American vehicles frequently depend on parts and components that cross the U.S.-Canada border during production. Reuters reported that U.S. auto manufacturing remains heavily integrated with both Canada and Mexico, meaning substantially higher tariffs on Canadian vehicles and components could also disrupt American assembly plants.

Flavio Volpe, president of Canada’s Automotive Parts Manufacturers’ Association, warned Reuters that U.S. automakers cannot easily remove Canadian suppliers from the production chain. “Without those specific parts, auto assembly throughout the U.S. would halt,” he said.

Trump escalated the dispute again on Aug. 24, announcing on Truth Social that tariffs on Canadian cars, trucks, automotive parts and steel would rise to 50 percent on Jan. 1, 2027. “On January First, 2027, Tariffs on all Cars, Trucks, both large and small, Automotive Parts, and Steel, will be increased to 50%,” Trump wrote. Just days earlier, Reuters had reported that the proposed trade agreement under negotiation would have reduced the top U.S. tariff on Canadian-built vehicles from 25 percent to 15 percent.

CBS News reported that Trump also included Canadian steel in the Jan. 1 announcement, although Canadian steel already faces a 50 percent U.S. tariff. Non-U.S. content in Canadian vehicles and auto parts currently faces a 25 percent tariff.

Original article