Trump Postpones 50% Tariff Threat on Canadian Goods as U.S. and Canada Seek Deal

WASHINGTON — August 19, 2026

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President Donald Trump has postponed a planned 50% tariff on a broad range of Canadian goods, delaying the measures for three days as Washington and Ottawa work to finalize a trade agreement.

The tariffs were scheduled to take effect at midnight Tuesday and would have affected approximately $20 billion worth of Canadian imports. The proposed duties covered products including dairy, alcohol, furniture, clothing, plastics, industrial equipment and other manufactured goods.

Trump announced the decision late Tuesday on Truth Social, saying he had paused the tariffs because the United States and Canada had reached a deal, subject to the finalization of the necessary documents.

The announcement followed several days of intensive negotiations between the two governments. Canadian Prime Minister Mark Carney and Trump spoke on both Monday and Tuesday as officials worked to prevent another escalation in trade tensions between the two countries.

In a statement released late Tuesday, Carney confirmed that the tariffs had been postponed until the end of August 21. He said substantial progress had been made, while emphasizing that important work remained before the agreement could be finalized.

A Temporary Pause in Trade Tensions

The proposed tariffs represented a significant escalation in the trade dispute between the United States and Canada.

The targeted products accounted for approximately 5% of the total value of U.S. imports from Canada last year. Although Trump’s administration has focused its criticism on Canadian barriers affecting American dairy, automobiles and alcohol, the proposed tariffs extended well beyond those sectors.

Canadian exporters of furniture, clothing, plastics, industrial machinery and other manufactured goods would also have been exposed to the new duties.

Canada has previously responded to Trump’s tariffs with retaliatory measures, making it one of the few countries to directly counter the president’s earlier trade actions. Carney later rolled back most of those measures in an effort to ease tensions.

For businesses on both sides of the border, the three-day postponement offers temporary relief but leaves significant uncertainty. Companies that depend on cross-border trade now have only a short window before the next deadline.

Trump Revives Keystone XL Discussion

Trump also used his announcement to raise the possibility of reviving the long-delayed Keystone XL pipeline.

The president said the controversial project “may be awoken from the grave,” without providing further details.

Keystone XL was designed to transport crude oil from Alberta, Canada, to refineries and markets in the United States. The project became a major political and environmental issue before being canceled after years of debate.

Trump’s renewed reference to the pipeline could signal that energy cooperation may form part of the broader negotiations between Washington and Ottawa.

Legal Questions Surround the Tariffs

The proposed tariffs also attracted attention because the Trump administration planned to use Section 338 of the Tariff Act of 1930, a little-known trade law that has never previously been used to impose tariffs in this manner.

The administration’s reliance on the provision was expected to face legal challenges. The issue comes after the Supreme Court overturned Trump’s sweeping tariffs imposed earlier this year under a separate legal authority.

Section 338 appears to give the president broader flexibility regarding the duration of tariffs. Unlike some other trade authorities considered by the administration, the law does not appear to establish a specific time limit for duties imposed under its provisions.

Had the tariffs taken effect, they could potentially have remained in place indefinitely unless Trump or a future president decided to remove them.

The Next 72 Hours

The postponement gives U.S. and Canadian negotiators until the end of August 21 to complete the remaining work.

Trump has described the situation as a deal awaiting final documentation, while the Canadian government has stressed that negotiations are still ongoing.

The coming days could therefore determine whether the latest tariff threat ends with a new trade agreement or becomes another chapter in the increasingly complex economic relationship between the United States and Canada.

For Canadian businesses and American companies that rely on cross-border trade, the three-day pause provides some breathing room. But until the final documents are signed, the possibility of a 50% tariff remains an unresolved risk.