Prime Minister Mark Carney has indicated that trade negotiations with the United States can resume only after President Donald Trump stops using social media to belittle Canada. This diplomatic friction coincides with a Deloitte Canada report warning that a total exit from the CUSMA trade pact could erase $402 billion from the Canadian economy over the next decade.
The $402 billion risk of a CUSMA collapse
The economic stakes of the current trade tension are immense, as the United States accounted for approximately 70 per cent of all Canadian exports in 2025. According to the Deloitte Canada report titled Tariffs: A Rough Road Leads to New Destinations, the dissolution of the CUSMA agreement would result in a 1.6 per cent decline in Canada's real gross domestic product over ten years.
Beyond the aggregate GDP loss, the report suggests a significant human cost. the authors—Matthew Stewart, Danielle Bochove, and Trevin Stratton—estimate that employment would shrink by an average of 163,000 jobs annually. This contraction would likely trigger a downward spiral for wages and overall consumer spending across the country.
A 28 per cent plunge for motor vehicles and parts
While the overall economic impact is severe, Deloitte Canada notes that specific industrial sectors would face near-catastrophic losses. The manufacturing sector is expected to bear the heaviest burden; by 2036, real GDP for motor vehicles and parts could plummet by 28 per cent compared to a baseline where CUSMA remains intact.
Other critical industries face similar declines, with electronics, machinery , and equipment seeing a 21 per cent drop, and rubber and plastics falling by 20 per cent. The energy sector is also vulnerable; the report says the oil and gas industry would lose its exemption from the U.S. 10 per cent global tariff, leading to an 11 per cent drop in oil sales and a 30 per cent decline in natural gas sales to the U.S.
Mark Carney's demand for an end to 'doing memes'
The economic data provides a stark backdrop to the personal friction between Prime Minister Mark Carney and President Donald Trump. Carney has stated that trade talks can only proceed when Washington stops "doing memes" and "throwing shade," suggesting that the current tone of U.S. diplomacy is an obstacle to formal negotiation.
This tension is fueled by President Donald Trump's public claims that Canada takes unfair advantage of the United States, specifically citing restrictions that prevent American banks from operating freely in Canada.. This transactional approach to diplomacy echoes previous trade disputes where social media rhetoric was used as a leverage tool before formal deal-making.
The $881 billion potential of removing interprovincial barriers
To mitigate the risk of U.S. volatility, Deloitte Canada suggests that Ottawa must look inward. Research from 2025 indicates that if Canada completely phased out interprovincial trade barriers over five years, it could generate an additional $881 billion in economic output by 2040 and create 133,000 new jobs.
Matthew Stewart, a partner at Deloitte Canada, admitted that full elimination of these barriers may be difficult to achieve. However, he noted that even partial progress, combined with export diversification toward markets like China and India, could offset much of the decline caused by a worsening relationship with the United States.
Who will resolve the dispute over American banks?
Despite the detailed economic projections, several critical questions remain unanswered. The source report mentions President Donald Trump's grievances regarding American banks, but it does not specify what regulatory changes the U.S. is demanding or whether Prime Minister Mark Carney is open to altering Canadian banking laws.
Furthermore, while the "best-case scenario" involves forging new trade agreements to grow GDP by 0.6 per cent, the report does not detail which specific nations, beyond China and India, are viable partners for a manufacturing shift. it remains unclear if Canada can realistically pivot its industrial base fast enough to avoid the projected losses in the automotive and chemical sectors.
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