⁠Liberal MPs Back Carney’s U.S. Walkout but Warn Trade War Is an ‘Existential Threat’ to Canada’s Economy

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Canada’s latest break with Washington has produced an unusual combination of political unity and economic unease inside the governing Liberal caucus. Liberal MPs interviewed after Prime Minister Mark Carney suspended trade negotiations with the United States have largely backed his refusal to accept a deal Ottawa considered unfair. At the same time, some are warning that a prolonged confrontation could damage jobs, investment and household finances long after the diplomatic headlines fade.

The anxiety is grounded in the extraordinary depth of the Canada-U.S. commercial relationship. Hundreds of billions of dollars in goods and services move between the two countries each year, while new U.S. tariffs are already reaching Canadian exporters. The immediate political question is whether Canadians will continue supporting a hard line if the economic pain becomes more visible.

Caucus Unity Is Strong — for Now

Liberal MPs appear to be closing ranks around Carney’s decision, but their support is not the same as complacency. Recent reporting from Ottawa found Liberal MPs largely supporting the decision to suspend negotiations rather than accept terms the government considered damaging. The greater concern inside caucus is what happens if the pause turns into a prolonged trade conflict. Judy Sgro, the Liberal chair of the House of Commons international trade committee, described the potential longer-term economic consequences as “very frightening,” emphasizing the need for governments, businesses and communities to help one another through the disruption.

The language became even sharper outside the current caucus. Former Liberal MP Joe Jordan described the confrontation as an “existential threat” to Canada’s economy. That wording captures the political tension facing Carney: Liberals can believe he was justified in leaving the negotiating table while simultaneously fearing what an extended rupture could cost. Their support is therefore best understood as confidence in the government’s negotiating position, not confidence that Canada can absorb an unlimited cycle of tariffs and retaliation without serious consequences.

Why Carney Walked Away

Carney’s case for walking away rests on his argument that the proposed agreement had moved beyond a conventional negotiation over tariff rates and into areas Ottawa considered fundamental Canadian policy choices. In his August 22 remarks, the prime minister said Canada had been prepared to make significant compromises, including reducing remaining retaliatory tariffs on strategic sectors if Washington substantially lowered its own duties. What Canada would not accept, he said, were terms that threatened important domestic industries or compromised the country’s ability to make decisions involving language, culture and future economic policy.

The rupture came after what Carney described as late changes that made the package “uneconomic” and “unfair.” He instructed Canadian negotiators to return to Ottawa on August 21. Politically, accepting a short-term reduction in tariff pressure at the price of less policy flexibility could have weakened Canada going into future North American negotiations. That calculation helps explain why Liberal MPs can support the walkout even while acknowledging that the alternative — an escalating tariff confrontation with Canada’s dominant trading partner — carries potentially enormous costs.

Washington Disputes Ottawa’s Version of the Breakdown

Washington is telling a different story, and that disagreement complicates efforts to restart negotiations. U.S. Trade Representative Jamieson Greer has rejected Ottawa’s contention that American negotiators suddenly inserted unacceptable demands after the two countries had moved close to an agreement. According to Greer, Canada returned with additional requests and concerns of its own, ultimately asking for concessions the United States was unwilling to provide. He has also disputed suggestions from Ottawa that Washington intended to undermine French-language protections or broadly limit Canada’s ability to pursue independent trade relationships.

There has nevertheless been some movement since negotiations collapsed. Canada-U.S. Trade Minister Dominic LeBlanc welcomed a subsequent American clarification that measures designed to promote the French language would not be regarded as an unfair trade barrier, while asking Washington for similar clarity on other disputed provisions. That distinction could matter. Reopening negotiations may depend less on either government publicly accepting blame than on officials quietly narrowing the list of unresolved issues. Every additional public disagreement over what happened at the table, however, risks making that diplomatic reset more difficult.

Why MPs See an Economy-Wide Threat

Calling the conflict an existential economic threat can sound dramatic until the scale of Canada-U.S. commerce is considered. Global Affairs Canada reported that Canadian exports of goods and services to the United States totalled approximately $683.3 billion in 2025, while imports from the U.S. reached about $604.1 billion. Combined, that represents roughly $1.29 trillion in annual two-way commerce. Even after Canadian exporters made substantial progress expanding into other markets, the United States still accounted for roughly two-thirds of the country’s goods-and-services exports.

Dependence is particularly pronounced in physical goods. Approximately 72% of Canadian goods exports went to the United States in 2025, compared with roughly 53% of services exports. Integrated supply chains in autos, energy, agriculture, forestry, machinery and manufacturing mean the exposure stretches beyond companies that directly ship products across the border. An Ontario parts supplier or Quebec packaging manufacturer can lose business because its customer’s finished product becomes more expensive in the United States. That is why the duration of the confrontation matters almost as much as the tariff rate itself.

The New Tariffs Turn Risk Into Hard Numbers

The newest U.S. measures have transformed that vulnerability into a measurable cost. Ottawa says Washington imposed a 50% tariff on approximately $27.6 billion worth of Canadian goods beginning August 22. Canada has responded by preparing counter-tariffs scheduled to take effect September 8, with rates of 15%, 25% and 50% covering an equivalent value of American imports. Targeted categories include steel, dairy products, appliances, agricultural equipment, electronics, and pulp and paper. The measures cover only part of overall bilateral commerce, but within individual industries the disruption could be severe.

University of Calgary economist Trevor Tombe has estimated that the newest 50% U.S. tariffs could ultimately cost Canada close to 90,000 direct and indirect jobs if they remain in place. That threat arrives just as the labour market had shown some improvement. Statistics Canada reported that employment increased by 75,000 in July, while unemployment fell to 6.4%, its lowest level in two years. The Bank of Canada has nevertheless continued to describe an economy facing excess supply after weak growth and persistent trade uncertainty, leaving relatively little room for another major external shock.

Small Exporters May Feel the Shock First

Large factories and multinational manufacturers tend to dominate trade-war headlines, but smaller businesses may experience the pressure more quickly. A Canadian Federation of Independent Business poll of 1,833 business owners found that 40% of surveyed small businesses exporting to the United States sold products exposed to the proposed 50% tariff lists. Among affected exporters, 77% expected revenue losses, while 35% believed their revenues could fall by at least half. Machinery, wood products, plastics, packaging, food, beverages and creative products were among the areas exposed.

For a small manufacturer, those percentages can translate into an immediate cash-flow problem. A company may have spent years developing one or two major American customers without having the scale to absorb a 50% border charge, drastically reduce its prices or rapidly replace those customers overseas. CFIB has also warned that retaliation can create pressure in the opposite direction because many Canadian businesses import equipment, components or other inputs from the United States. The result can be a two-sided squeeze: fewer export orders and more expensive inputs, with delayed hiring or cancelled investment emerging before the damage becomes obvious in national economic figures.

Ottawa Is Building a $7.5-Billion Cushion

The federal government is trying to prevent tariff losses from quickly becoming permanent layoffs and business closures. Ottawa has announced $7.5 billion in new and expanded support, on top of nearly $25 billion it says has been committed since earlier rounds of U.S. tariffs began. Measures include an additional $1.5 billion for regional tariff-response programs, $500 million through a Business Development Bank of Canada liquidity initiative, $2 billion for a Canada Strong Diversification Fund and $3.5 billion in rapid-response measures intended to support workers and employers.

The size of the package is substantial, but its effectiveness will depend on whether vulnerable companies can actually access the money when it is needed. CFIB has criticized previous support programs for being too difficult for some smaller businesses to use and has called for simpler eligibility rules and lower thresholds. That creates another test for Carney’s government. Billions of dollars in available financing can strengthen balance sheets, but government credit cannot automatically replace a major American customer or keep a factory running when orders disappear. A longer conflict could therefore generate pressure for increasingly targeted wage, tax and sector-specific assistance.

Public Support Is Broad but Not Uniform

For the moment, Carney has significant political room to maintain a harder line. An Abacus Data poll conducted from August 21 to 26 found that 71% of Canadians believed the government had made the right decision to suspend negotiations, even when respondents were reminded that the move could lead to higher tariffs and greater economic uncertainty. Just 17% preferred accepting the American offer. The same research found 60% approving of the federal government’s overall handling of the negotiations.

The more revealing numbers may be underneath that national majority. Support for the decision reached 85% among Canadians aged 60 and older but was considerably lower, at 56%, among those between 18 and 29. That gap matters because political support can weaken unevenly if economic costs start becoming more tangible. Canadians may broadly agree that Ottawa should resist a deal viewed as unfair while disagreeing over how much economic pain is acceptable in pursuit of that goal. For Liberal MPs, the challenge is therefore not simply maintaining national unity today, but keeping public confidence if tariffs begin affecting hiring decisions, consumer prices and business investment.

Diversification Is Working — Just Not Overnight

Carney has repeatedly presented trade diversification as Canada’s longer-term answer to excessive reliance on the American economy, and recent figures suggest the shift has already begun. Global Affairs Canada reported that exports to non-U.S. destinations increased 11.1% in 2025. Those markets accounted for 32.8% of all Canadian exports, their highest share in approximately four decades. Statistics Canada similarly found that the American share of Canadian merchandise exports fell from 75.9% in 2024 to 71.7% in 2025, showing that exporters have already started redirecting some business.

But diversification is a long-term strategy rather than an immediate substitute for the U.S. market. American customers still purchased more than $683 billion in Canadian goods and services during 2025, far more than any individual alternative market. Building new shipping routes, distribution networks, regulatory approvals and long-term customer relationships requires time and capital. That makes the current dispute a paradox for Canada: U.S. pressure could accelerate the creation of a more diversified and resilient economy, yet the transition itself can be disruptive. Companies must survive the near-term shock before they can benefit from a less concentrated trading system.

September 8 Is the Next Political and Economic Test

September 8 is becoming an important pressure point because that is when Canada’s newest retaliatory tariffs are scheduled to take effect. The approaching deadline creates a natural opportunity for either government to determine whether the other is willing to reopen substantive negotiations before another layer of tariffs begins affecting cross-border commerce. Sgro has expressed hope that discussions could restart around that period. Formal channels were described as effectively closed immediately after the breakdown, although broader diplomatic contact has not stopped entirely, with senior Canadian and U.S. economic officials continuing to cross paths at international meetings.

The domestic political calendar is approaching as well. Parliament is scheduled to return in September, ensuring that Carney’s handling of the dispute, support for affected industries and the cost of retaliation will face much greater scrutiny. Jordan has suggested that the severity of the challenge could even justify a fresh Throne Speech setting out the government’s economic response. Whether Carney takes such a step or not, Liberal MPs will soon have to defend two propositions simultaneously: that Canada was right to walk away from unacceptable terms and that Ottawa has a credible plan to protect workers, businesses and investment if Washington does not return with something better.

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