Just days after US President Donald Trump announced that a trade agreement with Canada was within reach, relations between two of the world’s most economically integrated countries shifted from the brink of settlement to open trade confrontation.
New US tariffs of 50 per cent on approximately $20 billion worth of Canadian goods have now taken effect, while Ottawa has pledged to respond “dollar for dollar”.
The shift over just 72 hours goes beyond a conventional dispute over tariff levels. Details of the negotiations reveal a broader clash over market access, protection of domestic industries and the political ability of each government to make concessions.
Trade in goods and services between the two countries reached approximately $900 billion in 2025, according to Bloomberg.
The new US tariffs came into effect at 12:01 am on Saturday after last-minute negotiations collapsed on Friday evening, despite indications only days earlier that an agreement was close.
On Tuesday, less than two hours before an earlier deadline expired, Trump announced that the two sides had reached an agreement and suspended threatened tariffs.
Canadian officials later said that key elements remained unresolved, according to Bloomberg.
By the middle of the week, Canadian Prime Minister Mark Carney was speaking of “significant progress”, while Canada’s trade minister described the two sides as “very close”.
By Friday evening, however, negotiations had collapsed. Canada suspended the talks and shifted from negotiating tariff reductions to preparing retaliation.
Why Did the Deal Collapse?
Washington and Ottawa have offered different accounts of what happened in the final stages of negotiations.
US Trade Representative Jamieson Greer said the Canadian side introduced late demands that disrupted the “delicate balance” of a draft negotiated over several days.
He said the United States had offered Canada “the best treatment of any major supplier”, according to the Financial Times.
Carney gave the opposite account, blaming Washington for changing the terms in the final stage.
He described the US amendments as “unfair and uneconomic” and warned that they called the reliability of any agreement into question, according to the Wall Street Journal.
Beyond the dispute over responsibility, the gap between the two sides had already narrowed considerably on several major issues.
According to Bloomberg, the draft agreement would have reduced US tariffs on Canadian steel and aluminium from 50 per cent to 25 per cent, lowered tariffs on vehicles from 25 per cent to 15 per cent, and removed a 10 per cent tariff on lumber.
Formal negotiations would also have begun over renewing the United States-Mexico-Canada Agreement, USMCA.
In return, Ottawa would have withdrawn its retaliatory measures, ended bans imposed by some provinces on American alcoholic beverages and expanded access for US products to Canada’s dairy market.
The Cost of Concessions
These details suggest that the negotiations collapsed more because of the final terms of the agreement and domestic political and economic constraints than because of the headline tariff rates alone.
Canada had sought deeper reductions in the 50 per cent tariffs on steel and aluminium and the 25 per cent tariffs on vehicles, as well as action on lumber tariffs that had already contributed to factory closures, according to the Financial Times.
Washington, meanwhile, pushed for an end to provincial bans on American alcoholic beverages, expanded access to the Canadian dairy market, the removal of Canadian retaliatory tariffs on US vehicles and changes to government procurement restrictions.
But compromise faced domestic resistance in both countries.
According to Bloomberg, US steel and aluminium industries opposed concessions that would weaken the protection provided by tariffs.
Carney also faced domestic criticism because accepting the agreement would, in practical terms, have entrenched tariffs that Ottawa continued to describe as illegal, even if at lower rates.
The issue became even more sensitive in Canada because the dispute increasingly took on a sovereignty dimension.
Trump’s repeated comments about making Canada the “51st state”, along with his description of Canadian prime ministers as “governors”, fuelled a consumer boycott of US goods and increased the political cost of any concessions by the Canadian government.
Canadian media cited polling from Abacus Data showing that only 18 per cent of Canadians supported making concessions to secure an agreement.
A Leger poll found that 56 per cent wanted the government to maintain a hardline position.
These figures leave Carney, who came to power on a platform challenging US tariffs, with limited room to manoeuvre.
Canada Pays First
Economically, the immediate cost appears heavier on Canada because large parts of its economy are closely tied to the US market.
Trevor Tombe, an economist at the University of Calgary, estimates that prolonged tariffs could lead to the loss of around 90,000 jobs in Canada, according to Bloomberg.
The greatest pressure is expected in machinery, electronics, plastics, rubber, furniture, lumber, paper and chemicals.
British Columbia, Ontario and Quebec are likely to bear much of the impact.
Canadian Chamber of Commerce President Candace Laing described the tariffs as “a severe blow to competitiveness”, warning that Canadians could see customers, investment and small businesses disappear.
Dan Kelly, president of the Canadian Federation of Independent Business, called the decision “deeply concerning for thousands of small Canadian exporters”.
Ottawa is responding through two parallel strategies.
The first is short-term retaliation on a “dollar-for-dollar” basis, combined with new support for workers and businesses.
This follows approximately $25 billion in assistance already provided over the past 18 months.
The second is a longer-term attempt to reduce Canada’s economic dependence on the United States.
This includes infrastructure projects valued at around $500 billion and a new oil pipeline aimed at expanding Canadian energy markets beyond the United States.
Tariffs Rebound on the US
The unequal scale of losses does not mean the US economy is insulated from the consequences.
The impact inside the United States is likely to be more widely distributed and less concentrated in individual sectors, but it carries significant political and inflationary risks.
US importers pay tariffs at the border, and part of that cost can be passed on through higher prices for plywood, beverages, construction materials, hockey equipment and other goods.
This comes at a time when the cost of living remains a politically sensitive issue for voters ahead of the November midterm elections, according to Bloomberg.
Higher import costs also add another inflationary factor for the Federal Reserve at a time when it is considering further monetary tightening, while the US administration is seeking to reduce borrowing costs.
Even so, Washington has designed the tariffs in a way that limits some of the damage that could directly rebound on the US economy.
Resources on which the United States depends heavily have been exempted, most notably crude oil.
Canada supplies the US market with more than four million barrels of oil a day, alongside potash and critical minerals.
These exemptions point to a calculated escalation intended to pressure Ottawa while avoiding disruption to supply chains that the US economy would struggle to replace quickly.
Tariffs Face Legal Challenges
The risks extend beyond trade and prices.
According to the Wall Street Journal, the new tariffs rely on a provision of the Tariff Act of 1930 that has never previously been used to allow a president to penalise countries deemed to discriminate against US trade.
That opens the door to legal challenges.
The issue is especially significant because the US Supreme Court struck down a previous package of Trump tariffs six months ago after they were imposed under emergency powers legislation.
The legal basis for the new round of tariffs is therefore likely to face close scrutiny.
This comes amid growing uncertainty over the future of the USMCA.
The US administration declined to fully renew the agreement this summer, leaving it subject to continuing review.
The Financial Times also quoted Greer as describing talks with Mexico as “constructive”, in contrast with the collapse of negotiations with Canada.
This suggests Washington may increasingly deal with its two USMCA partners through separate tracks.
Who Backs Down First?
The next phase will depend on the scale of Canada’s retaliation and Washington’s response.
According to Bloomberg, a US official said no new talks were scheduled and that Trump would be presented with several options to “level the playing field” if Canada proceeded with retaliatory measures.
That raises the risk of the confrontation expanding beyond the current package of goods worth around $20 billion into the much larger trade in vehicles and metals.
Yet the structure of the measures themselves still leaves room for negotiations to resume.
The exemptions for oil, potash and critical minerals reduce the likelihood of a complete trade rupture.
Greer’s insistence that the negotiations were not hostile also suggests that political channels have not been completely closed.
The available indications therefore point towards continued trade confrontation in the short term.
Ottawa is likely to rely on support programmes and accelerate the diversification of its trade, while the renewal of the USMCA remains unresolved.
This is where the central economic paradox of the confrontation lies.
The United States can inflict greater damage on Canada because of the imbalance in economic size and trade dependence.
But the integration of production chains and markets means tariffs do not work in only one direction.
The more expensive it becomes for Canadian products to reach the US market, the greater the pressure on exporters, investment and employment in Canada.
At the same time, part of that cost is transferred to businesses, consumers and prices inside the United States.
For this reason, the Canadian Chamber of Commerce president described the confrontation as another chapter in a “self-destructive trade saga” in North America.
In an economic relationship worth around $900 billion a year, the issue is no longer simply which side can impose the higher tariffs.
The real question is how much damage each economy can absorb before returning to the negotiating table becomes cheaper than continuing the trade war.
