President Donald Trump is already struggling to rally the Republican base to sufficiently fend off a threat from the Democrats in the upcoming midterm elections — and it’s not just the war with Iran causing the problem.
The president’s ongoing trade war with Canada is also becoming a serious problem for Republican candidates ahead of the election, with opposition to his tariff policies in several states potentially determining which party controls the U.S. Senate.
President Donald J. Trump gives U.S. travel executives a tour of the White House grounds after a press conference in the Oval Office, Wednesday, September 2, 2026. (Official White House Photo by Molly Riley)
President Donald J. Trump greets the crowd in Medora, North Dakota, after arriving on the Freedom 250 Train en route to the grand opening of the Theodore Roosevelt Presidential Library, Wednesday, July 1, 2026. (Official White House Photo by Daniel Torok)
In fact, many experts consider this his biggest mistake ever
The Canada Mistake?
Republican candidates in Michigan, Maine, and New Hampshire are publicly distancing themselves from the president’s trade policies.
Specifically, he warns that higher import taxes are hurting businesses and driving price up.
The comments come as President Trump announces that his administration could soon reach an agreement with Canada to end the dispute.
Speaking at a campaign rally in Port Huron, Michigan, on October 25, the president defended his tariff policy but said Canadian representatives were preparing to make significant concessions.
The comments came after the administration announced the previous Friday that it would remove 50% tariffs on several Canadian products essential to Maine’s agriculture industry.
Republican Senator Susan Collins is fighting to keep her seat.
Trump Says Canada Deal Coming Soon
At Sunday’s rally in Michigan, President Trump told supporters the trade war with Canada would end soon, though he offered no additional details.
“I had to do it,” the president told the rally. “We’ll have that settled pretty soon. They’re willing to give us anything at this moment.”
It comes after months of voter frustration over worsening economic relations between Ottawa and Washington.
After negotiations collapsed in August, the Trump administration imposed tariffs of up to 50% on billions of dollars’ worth of Canadian imports.
Canada responded with its own tariffs on American goods. Trump’s comments are good news for Americans, but the Canadian government has not confirmed that a breakthrough may be imminent.
Prime Minister Mark Carney says Canada is prepared to keep negotiating, but only on conditions that protect Canada’s economic interests.
Republican Senate Candidate Opposes Trump Policies
The Michigan Senate race between Republican Mike Rogers and challenger Democrat Abdul El-Sayed will likely be affected by the Canada tariff issue.
Rogers has launched an advertisement campaign criticizing the president’s Canada tariff policies — though he otherwise supported President Trump’s economic agenda.
And, during an interview on NBC’s Meet the Press on Sunday, Rogers praised President Trump’s trade policies generally and encouraged more investment in Michigan.
He did, however, note the concerns of Michigan voters about the tariffs’ impact on the automotive industry.
For Michigan, it’s a big problem.
American and Canadian manufacturers have spent decades building an integrated supply chain with the state, with vehicles and components regularly crossing the border during the production process.
That means additional taxes on imported materials are raising manufacturers’ costs, risking jobs, and forcing companies to raise prices and pass those costs on to consumers.
A Siena/New York Times poll from September found that 67% of Michigan voters opposed tariffs on Canadian goods. That figure included about one-third of those who voted for Trump in 2024.
White House Helps Maine
The Trump administration, likely recognizing the threat in some states particularly impacted by the policies, is now taking action and making concessions.
New exemptions were announced on October 23 following a request from Republican Senator Susan Collins.
The exemptions cover nine categories of imports from Canada used by Maine businesses, including agricultural machinery, refrigeration equipment, packaging materials, and products used in the state’s blueberry, potato, and apple industries.
Collins, who has historically been critical of the president, is facing Democrat Troy Jackson in a tight race. Collins has also repeatedly warned the Trump administration that tariffs will have extreme economic consequences for her state.
But the White House has not abandoned its tariff policy entirely.
In fact, the administration has simultaneously imposed new 50% duties on other Canadian products, including shampoo, vinyl flooring, carpets, and air conditioners.
This means the exemptions are designed to offer specific relief to certain businesses without reducing the overall economic burden caused by the trade dispute.
Republican Senate candidate John Sununu of New Hampshire has also criticized the trade war in Canada, raising questions about how it will affect other candidates throughout the northeastern United States, where the impact is felt most.
Americans Oppose Trump’s Tariffs
Opposition to Trump’s tariff policies extends beyond the states that border Canada.
An AP-NORC survey found that 64% of American adults believe Trump has gone too far in imposing tariffs on other countries.
Another Pew Research survey found that only 40% of Republicans expected tariffs to have a mostly positive effect on the country in October—down from 49% in January.
About the Author: Jack Buckby
Jack Buckby is a British researcher and analyst specializing in defense and national security, based in New York. His work focuses on military capability, procurement, and strategic competition, and he produces and edits analysis for policy and defense audiences. He brings extensive editorial experience, with a career output spanning over 1,000 articles at National Security Journal, and has previously authored books and papers on extremism and deradicalization.
