Donald Trump pauses 50% tariffs on Canadian goods for three days

Tariff pause announced

U.S. President Donald Trump paused the planned rollout of 50% tariffs on Canadian goods for three days, announcing the reprieve late Tuesday (August 18, 2026) on his Truth Social platform, mere hours before a midnight deadline. The delay was "based on the fact that Canada and the U.S.A., subject to the finalization of documents, have a DEAL!" Mr. Trump wrote.

Canadian Prime Minister Mark Carney was less definitive, saying "substantial progress has been made" towards a comprehensive trade deal, but "there is important work still to be done."

The pause marks a sharp reversal after negotiations collapsed over the weekend, with tariffs coming into effect at midnight Saturday. The 50% tariffs target about $20 billion worth of Canadian goods, according to estimates from Oxford Economics, covering products such as wine, hockey sticks, and cement. The White House alleged "discriminatory treatment" by Canada against U.S. alcohol, automobile, and dairy products.

Background of the trade dispute

The tariffs were imposed under Section 338 of the Tariff Act of 1930, targeting more than 500 Canadian products. According to The Expositor, the tariffs impacted $28 billion worth of Canadian goods, a figure that differs from the $20 billion estimate cited by other sources. Experts have warned that the 338 tariffs, which include tariffs on some products that normally qualify for preferential treatment under the Canada-United States-Mexico Agreement (CUSMA), are illegal and will be challenged in courts.

Prime Minister Carney called the tariffs an "attack" and said Canada is now "at war." He pledged dollar-for-dollar counter tariffs starting Sept. 8. Trump also threatened to hike tariffs to 50% on Canadian autos, trucks, and auto parts by Jan. 1, up from the current 25% rate.

Negotiation breakdown

Reporting from Politico Europe, based on interviews with more than a dozen current and former Canadian and U.S. officials, lobbyists, and business groups, suggests the deal Trump had touted buckled under a combination of last-minute demands and political constraints. U.S. officials blamed Canada for introducing new asks late in the talks, including seeking lower tariffs on heavy trucks, while Canadian leaders, including Carney, pointed to turf wars within the Trump administration over who controlled key pieces of the deal.

Carney denied making last-minute requests. The negotiations exposed friction between U.S. Trade Representative Jamieson Greer and Commerce Secretary Howard Lutnick. Two people familiar with the talks said Lutnick felt the deal framework hammered out by Greer's trade office was "sprung on" his agency. A White House official denied that there was any daylight between Greer and Lutnick in the talks.

Greer said the tariffs aimed to "hold Canada accountable" for its retaliation against the United States. Carney drew plaudits from across the domestic political spectrum for standing up to Trump, with Ontario Premier Doug Ford supporting Carney's decision to walk away from the table. Trade groups representing the North American auto, agriculture, and lumber industries expressed surprise and dismay at the talks' collapse. The U.S. Chamber of Commerce urged negotiators to return to the table at once.

Local impact

In Sarnia-Lambton, Ontario, businesses are "still trying to digest, figure out what's what," said interim chamber CEO Steve Crozier. "It's going to take a few days." Crozier expressed disappointment in the American administration for "trying to change the terms at the very last second." He noted that people in Sarnia-Lambton cross the Blue Water Bridge into Michigan much less than before, describing Port Huron as "a shell of a community compared to what it used to be." Crozier also noted the U.S. needs Canadian petrochemicals given the ongoing war in Iran, and the Sarnia-Lambton chamber plans to advocate for support and a return to negotiations. Crozier has been in contact with local MP and MPP offices.

Economic estimates

Oxford Economics estimated that the impact of the duties on Canada's economy would be "modest" but would affect central Canada's manufacturing sector much more severely. The tariffs target around 5.5% of Canada's exports to the United States, worth about $20 billion. Trump also mentioned reviving the Keystone XL Pipeline in his Truth Social post. The U.S. Supreme Court struck down many of Trump's global tariffs earlier in the year, a factor experts say could affect the legal standing of these tariffs.

Perspectives

Carney administration: Canadian Prime Minister Mark Carney framed the tariffs as an "attack" and said Canada is "at war," pledging dollar-for-dollar counter tariffs starting Sept. 8. He denied making last-minute requests and said substantial progress has been made towards a deal.

Trump administration: U.S. President Donald Trump announced the pause, citing a potential deal, and the White House alleged discriminatory treatment by Canada. U.S. officials blamed Canada for introducing new asks late in the talks.

Local business community: Steve Crozier, interim CEO of the Sarnia-Lambton chamber, expressed disappointment in the American administration for last-minute changes and highlighted the impact on cross-border communities.

Trade groups: North American auto, agriculture, and lumber industries expressed surprise and dismay at the talks' collapse, while the U.S. Chamber of Commerce urged negotiators to return to the table.