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Trump removed 50% Section 338 tariffs on 22 Canadian product lines, including Maine farm inputs, and added 100 others days before the midterm elections.
- Revised Section 338 tariffs took effect Oct. 30, removing 22 Canadian product lines and adding 100.
- Relief covers about $5.1 billion in 2025 imports; newly tariffed goods total roughly $2.6 billion.
- Canada holds C$27.6 billion in counter-tariffs and says it will hold out for a good trade deal.
Lead
President Donald Trump has lifted 50% tariffs on a set of Canadian goods used heavily by farmers in Maine, a move welcomed by Republican Sen. Susan Collins, who faces a difficult re-election race on Nov. 3. A White House proclamation announced Oct. 23 and effective Oct. 30 at 12:01 a.m. Eastern time removed 22 product classifications from the duty and added 100 others, leaving the overall tariff burden on Canadian goods broadly unchanged.
What Did the White House Change?
The proclamation removed the 50% duty from 22 tariff classifications, including plywood, plastic and paper packaging, corrugated boxes, crates, plastic sacks, packing machinery, refrigeration equipment, agricultural sorting machinery and edible seaweed. Those goods represented about $5.1 billion of U.S. imports in 2025.
In their place, the order added 100 classifications worth roughly $2.6 billion, among them shampoo, vinyl flooring, carpets, coffins, paints and varnishes, power tools, chest freezers, window-unit air conditioners, valves, cocoa powder and canoes. The White House described the revision as a way to keep offsetting the burden on U.S. commerce "while better serving the public interest."
Why Does Maine Matter to the Tariff Revision?
Maine matters because Collins is seeking a sixth term in a blue-leaning state against Democrat Troy Jackson, and the relief targets the supply chain of the state's wild blueberry, apple and potato growers. Collins said those producers rely on specialized equipment, packaging materials and other products from Canada that cannot be replaced from U.S. suppliers without significant expense.
Democrats were quick to criticize the timing. Rep. Richard Neal called the exemptions "a desperate admission of failed trade policy," arguing the tariffs rest on politics rather than a legitimate trade rationale. The election falls 11 days after the announcement.
How Do Section 338 Tariffs Work?
Section 338 of the Tariff Act of 1930 allows a president to impose duties of up to 50% on, or ban imports from, a country found to discriminate against U.S. commerce. Trump invoked it for the first time on July 20, 2026, with duties starting Aug. 19 on roughly $20.2 billion of Canadian goods, including wine, hockey sticks and cement.The administration cited three grievances: provincial policies that pulled U.S. alcohol from liquor store shelves, Canadian automotive tariffs and quotas, and dairy restrictions. The duties apply whether or not a product qualifies for preferential treatment under the USMCA, which undercuts the usual protection for compliant cross-border supply chains. The statute has no history of use, so courts have not tested whether it requires the investigative steps that other trade laws demand. The measures also sit uneasily with World Trade Organization commitments.
Canada's Response
Ottawa has not moved to settle. Prime Minister Mark Carney said Canada is willing to hold out for a good deal rather than rush the process, and Trade Minister Dominic LeBlanc said the government stands ready to work constructively while it assesses the changes. Ontario Premier Doug Ford urged Washington to "get rid of the rest" of the tariffs.
Canada's counter-tariffs cover C$27.6 billion of American imports at rates of 15%, 25% and 50%. Canada's Parliamentary Budget Officer estimates the trade-weighted effective U.S. tariff rate on Canadian imports has risen from 5.3% to 7.7%.
What Does the Swap Mean for Trade Leverage?
The swap shows the tariffs function as negotiating leverage that can be adjusted by product line, not as a fixed schedule. The administration is using the duties to pressure Canada in talks over the review of the USMCA, a tactic that echoes the first term, when steel and aluminum tariffs were used to bring Ottawa to the table.
For importers, the product-by-product changes add compliance and pricing uncertainty. Retailers and manufacturers that buy Canadian paints, flooring, power tools and appliances face higher landed costs, while packaging and refrigeration buyers see relief. The net trade value affected is smaller than the earlier $20.2 billion tranche, so the near-term macroeconomic effect on inflation and trade flows is limited.
Outlook
The Oct. 30 revision removes duties on about $5.1 billion of Canadian goods while adding about $2.6 billion, preserving pressure on Ottawa and delivering targeted relief to Maine growers just before voters go to the polls. The next tests are Collins' Nov. 3 race, any Canadian response to the new product lines, and the direction of USMCA review talks, where the Section 338 duties remain a central bargaining chip.
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