A deal that wasn't

A DEAL that wasn't

THE MOST integrated bilateral trade relationship in the world shares a curious similarity with the purchase of a used house. So at least Mark Wiseman, Canada's ambassador to the United States, puts it. On August 21st, after nearly two weeks of intense negotiation, he compared the collapsed trade talks to a handshake agreement in which the buyer discovers, too late, that the appliances, the garage and the yard were never part of the deal. Mr Wiseman's analogy captures something disquieting about the way modern tariff diplomacy now works: deadlines are set, verbal understandings are reached and then the written text moves away from what either side thought it had agreed.

The result is the sort of outcome both sides claimed to want to avoid. At midnight on Saturday, the United States imposed 50% tariffs on approximately $20 billion of Canadian goods, covering everything from wine to cement to hockey equipment. Canada's prime minister, Mark Carney, announced retaliatory duties to take effect on September 8th, matching the American levies "dollar for dollar". The US Chamber of Commerce warned that 13 million American jobs dependent on the US-Mexico-Canada trade agreement are now at risk. The trouble is that all three of those facts — the tariffs, the retaliation and the economic damage — are the ones both governments pretended their negotiators could avert.

To understand the collapse, one must look past the "fine print" to the structural incentives beneath it. The surface story, as Mr Wiseman told it, was a matter of interpretation: discrepancies between verbal understandings and written terms that accumulated into something the Canadian side described as the "most negative interpretation" of every open issue. Three points proved decisive. First, the United States refused to extend tariff relief to medium and heavy-duty vehicles, threatening to make production uneconomic at Ontario plants run by General Motors and Ford. Second, the US sought to constrain Canada's ability to negotiate independent trade deals with other nations — not, as Mr Wiseman insisted, specifically about China, but about economic sovereignty. Third, Washington pressed for limits on Canada's protections for the French language in digital services and streaming, a line Mr Carney called non-negotiable.

But the real issue was not any of those three points individually. It was the negotiating process itself. The Trump administration set a deadline, offered a temporary pause to signal progress, then introduced last-minute changes hours before the deadline expired. That is not a technique for producing durable agreements. It is a technique for testing how much leverage a counterpart will absorb before walking away. Mr Wiseman noted that Canada received conflicting messages from US Trade Representative Jamieson Greer and Commerce Secretary Howard Lutnick, creating what he called a "dizzying" communications environment. Whether that disunity was deliberate or accidental does not matter much. The effect is the same: the other side cannot trust the text.

The economic stakes make this pattern especially dangerous because the two economies are not merely trading partners. They are functionally interwoven. In 2025, the United States accounted for 73% of Canada's total exports. Automotive parts can cross the border up to eight times before final assembly, which means tariffs compound at each stage rather than being applied once. General Motors alone forecasts $3 billion to $4 billion in tariff costs for 2026. Canada is also the largest foreign supplier of crude oil and natural gas to the United States, importing roughly four million barrels a day. The bilateral trade volume sits at approximately $700 billion annually. That level of integration was not built over a few years. It is the product of three decades of free-trade agreements, starting with the 1989 Canada-US deal, then NAFTA and now the USMCA. Tariffs do not simply tax imports; they tax the production process itself.

To be sure, the Trump administration has a point about sovereignty, too. Canada has been actively diversifying its trade relationships, signing 20 new deals in recent months, including agreements with Indonesia and the United Arab Emirates and opening talks with India. Mr Trump's insistence that Canada cannot simultaneously deepen economic ties with other nations and enjoy preferential access to the American market is not unprecedented. Many countries demand that trade partners limit their commitments to third parties. The question is whether such demands are compatible with a relationship whose entire foundation is open trade.

It is tempting to think that the Canadian side holds the stronger hand. Mr Carney polls at approximately 60%, and a majority of Canadians favour a hard line. The Canadian economy benefits from lower borrowing costs — 4.2% for 30-year debt versus 5.3% in the United States — and from boosted commodity prices that have offset some of the export pain. Canadian provincial liquor boards have already banned American wine and spirits, collapsing US alcohol exports to Canada by 80%. The retaliation, deliberately targeted at states with upcoming Senate and gubernatorial elections, is designed to be politically painful.

Yet that political calculus is precisely the trap. The longer tariffs remain in place, the more deeply they embed themselves in prices, supply chains and investment plans. Canada's manufacturing sector shed 32,000 jobs between January 2025 and January 2026. Motor vehicle parts production alone lost 7,300 jobs in the same period. The 2025-26 tariff cycle has already reduced Canadian GDP by an estimated 1.5% to 2%, with households absorbing $1,700 to $2,000 in higher annual costs. Political popularity does not repair auto plants.

The deeper problem, for both sides, is that tariff diplomacy has been confused with trade policy. Tariffs are effective at extracting concessions when they target discrete products in sectors where the target country has few alternatives. They are a terrible instrument for managing a relationship in which two economies share supply chains, currency flows, energy grids and regulatory frameworks. The Luddites were wrong about whether machines would ultimately destroy work; they were right about the pain of transition. The equivalent insight here is that even if the two countries eventually reach a deal, the uncertainty costs — in investment deferred, capacity lost and jobs shed — do not reverse when the tariffs come down.

The broader lesson is about institutional credibility. The USMCA, like every trade agreement, depends on a baseline of trust that written terms will be honoured and that negotiations will be conducted in good faith. When one side consistently rewrites the text after a verbal understanding is reached, the incentive for the other side is not to negotiate harder but to negotiate less. Mr Wiseman's observation that the deal terms were "unfair, uneconomic" and called into question the "reliability of any deal" is the telling part. It is not the substance alone that matters. It is the suspicion that the substance will change again.

The first task for both governments is to separate genuine structural disputes — where legitimate differences of interest exist — from the mechanics of how those disputes are resolved. A wiser policy would establish longer timeframes, fewer public deadlines and more discipline around the gap between verbal and written terms. For investors, the relevant risk is not whether a deal will eventually be reached — the economics of integration make that probable — but how much economic damage accumulates in the interim. The cost will not fall evenly. It will fall on the auto workers in Ontario, the steel producers in Pennsylvania and the consumers in both countries who pay first and most.

Better to start now.