Sen. Susan Collins is urging the Trump administration to return to the negotiating table with Canada after a 50 percent tariff on more than $20 billion in Canadian goods took effect, warning the trade war will hit Maine families hardest.
Collins, a Republican from Maine, posted a statement Saturday calling on both Washington and Ottawa to step back from what she described as a cycle of tit-for-tat tariffs that will "lead to higher costs, risk, and uncertainty for Maine businesses." The statement came hours after U.S.-Canada trade negotiations collapsed and the White House moved to impose the steep new levy on Canadian imports.
Canadian Prime Minister Mark Carney responded the same day, pledging to "match those tariffs dollar for dollar." His government set Sept. 8 as the start date for retaliatory duties on American steel, dairy, appliances, agricultural equipment, pulp and paper, and electronics. Carney told reporters at a press conference Saturday that Ottawa would release additional policy details in the "coming days."
The rapid escalation puts Collins, a senator who votes with her party on the vast majority of issues, in a familiar and uncomfortable spot: publicly breaking with the administration on trade while insisting she remains aligned with its broader goals.
In her social media statement, Collins pointed to the concrete damage tariffs are already inflicting on her state's economy. The Hill reported on her remarks Saturday evening:
"Ever since the tariffs were first announced, I have heard from many businesses, farmers, and lobstermen concerned about the cost of navigating the tariffs, the lack of domestic supply chains, and the likely imposition of retaliatory tariffs by Canada."
Collins said she wants both sides to return to the negotiating table and urged the two neighboring countries to reach a "fair agreement." She did not call for the tariffs to be withdrawn outright, but her language left little doubt about where she believes the policy is headed: toward higher prices for the people she represents.
Her concerns are specific to Maine's geography and trade exposure. The state's lobster industry ships heavily into Canadian supply chains, its paper mills depend on cross-border timber and pulp, and its farmers sell potatoes and blueberries into markets that could face Canadian retaliation. In an earlier Senate debate over Trump's tariff emergency declaration, Collins cited harm to "home heating oil, gasoline, and petroleum products" alongside those agricultural sectors, National Review reported.
That earlier vote, in which Collins joined three other Republican senators, Rand Paul, Lisa Murkowski, and Mitch McConnell, to pass a largely symbolic resolution rebuking the tariff emergency declaration, passed the Senate 51-48. The House never took it up.
U.S. Trade Representative Jamieson Greer took a sharply different tone. In a social media post Saturday, Greer framed the breakdown as Canada's fault and cast the failed agreement as a lost chance for Ottawa:
"For decades, Canada has enjoyed the most favorable access to the U.S. market of any country. And from the beginning of President Trump's trade program, Canada has continued to enjoy the best treatment in the world, even after, like China, retaliating against the United States."
Greer described the forgone agreement as a "missed opportunity" and criticized Canadian leaders for what he called their "prolonged retaliation against the United States." The statement positioned the 50 percent tariff not as an opening salvo but as a consequence of Canadian intransigence.
Sen. Bernie Moreno, a Republican from Ohio, echoed that posture. Moreno responded to Carney's announcement on social media with a blunt assessment: "Canada's economy only exists by stealing American jobs." He added: "Carney is also right that 'America has changed.' We no longer have a President that sells out American workers."
Conservative radio host Hugh Hewitt piled on during a Fox News appearance Saturday morning, labeling Carney a "smooth talking banker" and accusing him of "driving Canada into the ground." Hewitt placed blame for the talks' collapse squarely on Canadian leadership.
Collins's willingness to challenge the administration is not new. She confronted Defense Secretary Pete Hegseth over the firing of senior military officers earlier this term, and she has broken with party leadership on several high-profile votes.
Collins is not the only Republican who has publicly resisted the administration's tariff strategy. The earlier Senate vote to rebuke Trump's emergency declaration drew support from McConnell, Paul, and Murkowski in addition to Collins. The Washington Examiner reported that Trump responded to those defections by accusing the four senators of being "extremely difficult to deal with and, unbelievably disloyal" in a late-night post on Truth Social.
Paul defended his vote on constitutional grounds, arguing that "taxes, under the Constitution, are supposed to originate in the House, then come to the Senate." Collins framed her opposition around economic impact, telling reporters that "Canadian tariffs are disastrous for the state of Maine" and that "Canada's our friends and our ally, and this is not China we're talking about," AP News reported.
But those votes carried little practical weight. The resolution needed House action to take effect, and House Republican leadership showed no interest in advancing it. The pattern, Senate Republicans registering symbolic dissent that dies quietly in the lower chamber, has repeated itself on trade policy throughout the current term.
Collins is hardly alone among Republicans willing to cross party lines when she believes the policy warrants it. She and Sen. Lisa Murkowski sided with Democrats to shield Education Department offices from a Trump administration restructuring effort, another instance where moderate GOP senators found themselves at odds with the White House.
The broader phenomenon of Republicans breaking from party orthodoxy has surfaced in different forms. Rep. Marjorie Taylor Greene declared she was "done" with the Republican Party after her own falling-out with Trump, and even across the aisle, Sen. John Fetterman has drawn praise from Republican colleagues for bucking progressive pressure.
Canada's retaliatory tariffs are now set to take effect Sept. 8. Carney's government has identified six broad categories of American goods that will face matching duties: steel, dairy, appliances, agricultural equipment, pulp and paper, and electronics. The scope of that list suggests Ottawa is targeting sectors with political weight in key American states, farm country, manufacturing hubs, and resource-dependent communities.
The Senate's earlier vote to terminate the tariff emergency passed 50-46, with the same four Republican defectors joining every Democrat. It was the second consecutive day Republicans joined Democrats to oppose Trump tariffs, following a similar break on Brazil duties the day before. But without House cooperation, those votes amounted to protest, not policy.
What remains unclear is whether the latest escalation, doubling the tariff rate to 50 percent on more than $20 billion in goods, will change the political math. Collins's Saturday statement stopped well short of calling for repeal. She asked the White House to "consider the negative impact" and urged negotiations. That is a request, not a demand.
Greer and Moreno, meanwhile, showed no appetite for compromise. Their public statements treated Canada's retaliation as proof that Ottawa, not Washington, bears responsibility for the standoff. Moreno's claim that Canada's economy "only exists by stealing American jobs" left no room for the kind of diplomatic off-ramp Collins is seeking.
For Maine's lobstermen and farmers, the distinction between a symbolic Senate vote and an actual policy reversal is not academic. They are the ones paying the tariff. And with Canada's retaliatory duties set to land in less than three weeks, the window for the negotiated settlement Collins wants is closing fast.
Lawmakers who refuse to let Senate business proceed as usual until their priorities get a vote have shown that individual senators can force attention to an issue. Whether Collins can translate her concerns into actual leverage over trade policy, rather than another protest vote that dies in the House, is the question that matters now.
Trade wars are easy to start and hard to end. The people who pay the price are never the ones who started the fight.