The US-Canada trade war in 5 charts

A Trade War That Refuses to End: How Tariffs Are Reshaping Two Neighbours

Constantvpn.com – Eighteen months after Donald Trump reclaimed the presidency and rolled out a sweeping programme of global tariffs, the border between the United States and Canada has become one of the most contested economic frontiers in North America. What began with sectoral levies on steel, aluminium, lumber, and automobiles has escalated into a full-scale tit-for-tat confrontation. Last week, Washington slapped an extra 50% duty onto roughly C$28 billion (US$20 billion; £15 billion) of Canadian products, while Ottawa answered on Tuesday with what it labels a “dollar-for-dollar” and “strategic” package of counter-tariffs aimed squarely at American goods. Neither side has signalled a path toward de-escalation.

The dispute matters not merely because of its scale but because of the depth of economic entanglement between the two countries. Free-trade arrangements dating back to the 1980s, reinforced by the USMCA, have woven the two economies together so tightly that the United States absorbs more than 70% of everything Canada ships abroad. That structural dependency means every percentage point of tariff lands with outsized force on Canadian producers, workers, and provincial budgets.

Provincial Pain: Where the Tariffs Bite Hardest in Canada

The sectoral duties have not been distributed evenly across the map. Ontario, home to the country’s largest manufacturing base and its most populous province, has absorbed the sharpest blow from the auto and steel levies. Assembly plants and parts suppliers across the province have announced rounds of layoffs and output reductions, and the province is estimated to have shed tens of thousands of manufacturing positions since early 2025.

Quebec, a major producer of steel, copper, and aluminium, saw metal exports plunge 36% between February 2025 and 2026, accompanied by a 3.6% contraction in sector employment, according to data released in July. The Royal Bank of Canada’s analysis places Ontario and Quebec at the top of the exposure ranking, while Newfoundland and Labrador, New Brunswick, Alberta, Saskatchewan, and Prince Edward Island sit at the bottom.

The additional 50% duties that took effect on 22 August are expected to ripple through every province, though British Columbia, Quebec, and Ontario will bear the heaviest share given their export profiles.

Swing-State Targeting: Canada’s Counter-Strike

On the American side, the economy’s sheer size cushions the aggregate shock, but the distribution of Canada’s retaliatory duties is anything but random. As of 8 September, Ottawa has imposed tariffs on C$28 billion worth of US goods spanning steel, furniture, cosmetics, and even toilet paper. Statistics Canada data show that Ohio will face the steepest provincial hit, with C$3.2 billion — roughly 12% — of its exports soon subject to Canadian duties. Illinois and Pennsylvania follow closely behind.

For Ohio, the steel tax and a levy on laundry machines carry the most weight. In Illinois, home to farm-equipment giant John Deere, the new duties on agricultural and construction machinery are the primary concern. Derek Holt, an economist at Scotiabank, observed that the targeting appears

“very deliberately oriented” towards some swing states that could decide the US balance of power in the upcoming midterm elections.

That political dimension adds a layer of complexity absent from most bilateral trade disputes: the counter-tariffs are not merely economic instruments but instruments of electoral pressure, aimed at states whose votes could reshape Congress in November.

Tariff Rates: Canada’s Position in the Global Stack

Prime Minister Mark Carney has repeatedly assured Canadians that, relative to the rest of the world, they still enjoy comparatively low US tariff rates. The arithmetic, however, has shifted uncomfortably. Before the latest 50% tranche, the average effective US tariff rate on Canadian imports stood at 2.9% in June — the lowest among major US trading partners, per Royal Bank of Canada figures. It has since nearly doubled to 5.7%, pushing Canada above Mexico and closing the gap with rates applied to the United Kingdom (6.2%) and Vietnam. China, by contrast, still faces an average effective rate hovering near 20.5%.

The effective rate captures the weighted average duty actually paid across all import categories, making it a more honest gauge of a trading partner’s real exposure than headline sectoral rates.

What Comes Next: Diversification and the Long Game

Carney has pledged to double Canada’s trade with markets outside North America, a goal that would require years of infrastructure investment, regulatory alignment, and market development. In the near term, however, the tariff standoff shows no sign of resolution. Both governments continue to frame their positions in maximalist language, and the next round of duties — or the next round of negotiations — remains uncertain.

For workers in Ontario auto plants, steel mills in Quebec, and farm-equipment suppliers in Illinois, the abstraction of trade policy has become a very concrete question: how many more months will the border remain a wall rather than a bridge?