New Bridge, Old Tensions: Tariff Dispute Strains US-Canada Cross-Border Relations

The recently opened suspension bridge linking the United States and Canada, conceived over two decades ago, saw a distinctly one-sided celebration at its inauguration, with only Canadian officials in attendance.

The Gordie Howe International Bridge, which spans the Detroit River to connect Detroit, Michigan, with Windsor, Ontario, is named in honor of a legendary Canadian hockey player who spent a significant portion of his career with a US franchise.

Under typical circumstances, such an inauguration would represent a grand, binational celebration complete with leaders from both nations, noted Glenn Stevens Jr., a spokesperson for the Michigan auto industry, in an interview with DW.

However, these are far from normal times in US-Canada diplomatic and economic relations.

Escalating tariffs will harm workers

In July, US President Donald Trump announced a sweeping 50% tariff on a wide array of Canadian imports. This was followed shortly by a further announcement doubling tariffs on Canadian automobiles and auto parts to 50%, a move that has sparked profound concern among businesses on both sides of the newly opened bridge.

In response, Canadian Prime Minister Mark Carney implemented retaliatory tariffs ranging from 15% to 50% on approximately $20 billion (€17.2 billion) worth of US imports.

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These retaliatory measures took effect at 12:01 Eastern Standard Time on Tuesday, September 8. Polls from the Canadian non-profit Angus Reid indicated that a majority of Canadians supported a firm stance against the US tariffs.

Concurrently, the same polling revealed that Canadian workers harbor deep anxieties regarding the security of their jobs.

Business leaders on both sides of the border have also cautioned against the detrimental impact these tariffs will have on both national economies.

“An escalating cycle of tariffs and retaliation will ultimately harm businesses, workers, and consumers on both sides of the border,” the Detroit-based Canada and US Business Association (CUSBA) stated in a release responding to the tit-for-tat trade measures. “Each new tariff compounds costs, disrupts production, delays investment, and weakens the competitiveness of both US and Canadian businesses.”

Jobs at stake on both sides of the border

Further north, the Financial Accountability Office of Ontario has projected that the new tariff regime will cost the region 119,000 jobs by 2026.

A significant portion of these projected job losses is expected within the automotive sector, with Ontario’s auto manufacturing output anticipated to contract by 8% in 2026 compared to a baseline scenario without tariffs.

This economic contraction is poised to reverberate across the border into the United States, particularly in Michigan, which accounted for over one-fifth of all US-produced vehicles in 2022, including several iconic household brands.

The economies of Michigan and Ontario are deeply intertwined, a reality emphasized by the Detroit Regional Chamber in August.

“Engines manufactured in Michigan are integrated into trucks assembled in Ontario, and vice versa, illustrating the dense supply chains linking the two regions,” explained Glenn Stevens Jr., the chamber’s Chief Automotive and Innovation Officer.

Data indicates that by 2023, Detroit-based automakers supported 815,000 indirect jobs across their supply chains, alongside 147,000 direct employees throughout the United States.

The Detroit chamber has advocated for a return to trade “normalcy,” defined as focusing on the United States-Mexico-Canada Agreement (USMCA, or CUSMA in Canada), which is currently up for its annual review.

Tariffs, EV attacks and AI blamed for job cuts

Even prior to the announcement of the latest tariff measures, Detroit’s renowned automotive sector was already experiencing a slowdown.

Production volumes and factory employment levels had remained relatively stable, according to Stevens Jr.

While this stability prevented significant job losses, it also meant that no new employment opportunities were being generated.

Tracking franchise listings for new vehicles at US car dealerships serves as a standard barometer for overall auto production.

These listings indicate that while vehicle production generally increased over the past year, the last 30 days have marked a significant slowdown.

Data from the industry weekly Automotive News shows roughly 33,000 more listed vehicles compared to the same period last year, yet nearly 70,000 fewer vehicles were listed in the past month alone.

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Beyond the showroom floors, a cautious approach within the US auto industry is increasingly evident.

US automakers were already adjusting their business strategies even before the latest tariff announcements, with industry leaders warning of rising domestic manufacturing costs.

These increased costs have subsequently been passed on to consumers, with US buyers facing record average prices exceeding $52,000 for new vehicles in September.

Automakers have resisted hiring and expansion for the past 18 months as tariff negotiations intensified, a trend compounded by a lack of investment in new designs due to the withdrawal of US federal support for electric vehicles, Stevens Jr. noted.

Is cross-border friendship fraying?

Beyond the automotive sector, the economic impacts of these tariffs are reverberating across other key industries.

Across the US, real estate market media have described a “cooling relationship” between the two nations, noting a tangible impact on property transactions, tourism revenue, and local economies.

Many Canadians now view visits to the United States as unpatriotic, a shift that has significantly dampened tourism, according to Claude Molineri, CEO of Visit Detroit.

Earlier this year, Detroit’s official visitor bureau reported an 11% decline in Canadian visitors compared to 2025 levels.

Meanwhile, various “buy Canadian first” online campaigns have emerged, directing consumers toward local businesses and Canadian-sourced ingredients in everyday grocery items.

The metropolitan corridors of Detroit and Ontario’s Windsor/Essex region typically facilitate over $100 billion in annual trade, representing nearly one-third of all bilateral trade between the US and Canada, according to the Downtown Detroit Partnership.

This cooling of cross-border relations carries significant economic risks for both nations.

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Edited by: R. Casey, M. Sass

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