The prevailing narrative among Ottawa’s political class is that the Canada-United States-Mexico Agreement (CUSMA) acts as a bulletproof vest against a looming trade war. According to Steve Verheul, Canada’s former chief trade negotiator, the legal architecture of the 2020 deal creates a buffer that makes any sudden tariff onslaught "less of a crisis" than it was during the chaotic 1980s or the 2018 steel and aluminum disputes. This perspective suggests that because the rules are already written, the North American supply chain is shielded by a predictable, if sometimes friction-filled, legal framework.
It is a comforting thought. It is also dangerously incomplete.
While CUSMA does provide a technical roadmap for dispute resolution, it cannot legislate against political willpower or national security dictates that bypass trade law entirely. The "exemption" mindset assumes that Washington views trade as a set of rules to be followed, rather than a tool for domestic industrial policy. In reality, the legal protections baked into CUSMA are only as strong as the political cost of breaking them. If a U.S. administration decides that a 10% or 20% across-the-board tariff is necessary for national security—using Section 232 of the Trade Expansion Act—the "protections" of CUSMA effectively vanish into a vacuum of litigation that could take years to resolve.
The Section 232 Trapdoor
The core of the "less of a crisis" argument hinges on the fact that Canada and the U.S. have spent decades integrating their economies. We do not just trade finished goods; we build things together. An engine might cross the border six times before it is bolted into a truck. This integration is supposed to be Canada’s ultimate leverage.
However, the 2018 steel and aluminum tariffs proved that the U.S. is willing to ignore economic logic in favor of perceived security gains. Under Section 232, the President of the United States has the power to impose tariffs if imports are deemed a threat to national security. During the last round of negotiations, Canada secured side letters intended to limit the impact of future 232 measures. But those letters are not ironclad shields. They are procedural speed bumps.
If Washington moves toward a global baseline tariff, the sheer scale of the action would overwhelm the capacity of CUSMA’s dispute settlement panels. You cannot litigate your way out of a total shift in a superpower's economic strategy. The crisis wouldn't be "lessened" by the treaty; it would be defined by the treaty's failure to prevent the baseline shift.
The 2026 Review is the Real Clock
While the media focuses on immediate tariff threats, the true danger lies in the mandatory 2026 joint review of CUSMA. This is the "sunset clause" that Canada fought so hard to soften during the original talks. It is not a simple check-in. It is a moment where any one of the three nations can effectively signal their intent to withdraw, starting a ticking clock that could dissolve the entire trade zone.
Optimists argue that the 2026 review is a chance to "modernize" the deal. Realists see it as an opportunity for the U.S. to demand massive concessions on dairy, digital services taxes, and automotive rules of origin. Canada’s strategy has traditionally been defensive—protecting the status quo while offering minor tweaks. That won't work this time. The U.S. political consensus has shifted toward protectionism on both sides of the aisle. The "rules-based order" is no longer the holy grail in D.C.; "reshoring" and "de-risking" are the new mandates.
Supply Chain Integration as a Double Edged Sword
We are often told that our integrated supply chains make tariffs impossible because they would hurt American consumers and manufacturers. This is the "mutual assured destruction" theory of trade. If you tax Canadian aluminum, you raise the price of an American Ford F-150.
But this theory assumes the other side cares about short-term inflationary pressure more than long-term structural change. If the goal of a trade war is to force manufacturers to move operations entirely onto U.S. soil, then the pain felt by American consumers is seen by some hawks as a necessary cost of "re-industrialization."
The Automotive Rubik's Cube
The automotive sector remains the most vulnerable point of this integration. Under CUSMA, vehicles must have 75% North American content to qualify for duty-free status. This was an increase from the 62.5% required under NAFTA. Canada and Mexico recently won a trade dispute regarding how these percentages are calculated, but the U.S. has shown little interest in complying with the ruling.
When a trade partner ignores the rulings of the very panels established by the agreement, the "exemption" becomes a fiction. Canada is left with two choices:
- Retaliate: Slap tariffs on American goods, which further hurts Canadian consumers and risks escalation.
- Capitulate: Accept the U.S. interpretation to maintain market access, effectively rendering the treaty's legal text moot.
The Energy Security Mirage
Canada’s strongest card has always been energy. We are the largest supplier of crude oil, electricity, and uranium to the United States. In any rational world, this makes Canada "untouchable." You don't start a trade war with your gas station.
Yet, the transition to green energy is complicating this dynamic. The U.S. Inflation Reduction Act (IRA) is essentially a massive subsidy program designed to pull investment into the U.S. at the expense of allies. While Canada has scrambled to match these subsidies with its own tax credits for EV battery plants and critical minerals, we are playing a game of "subsidize or die."
CUSMA does little to prevent this "subsidy war." In fact, the U.S. has been increasingly aggressive in ensuring that green energy incentives have "Buy American" provisions that technically violate the spirit of North American integration. If Canada relies on the treaty to protect its burgeoning battery sector, it will find that the treaty is silent on the specific mechanics of modern industrial subsidies.
Why the "Exemption" Mentality Fails
The danger of the former trade envoy’s "less of a crisis" stance is that it breeds complacency. It suggests that the heavy lifting was done in 2020 and that we can now rely on the paperwork.
But trade is not a static legal state; it is a constant exercise of power. The U.S. is currently moving toward a "Fortress America" stance. In that environment, a treaty is merely a list of suggestions. To survive a trade war, Canada needs more than a copy of CUSMA in its back pocket. It needs a proactive strategy that makes it indispensable in ways that go beyond simple "integration."
This means securing absolute dominance in the critical minerals supply chain—cobalt, lithium, and copper—that the U.S. desperately needs to compete with China. If Canada controls the raw materials, it has a leverage point that no Section 232 tariff can touch.
The Mexico Complication
Canada also suffers from being tethered to Mexico in the eyes of Washington. Much of the current U.S. trade ire is directed at Mexico, particularly regarding the "backdoor" for Chinese components entering the North American market.
There is a growing movement in the U.S. to "de-couple" from Mexico or to significantly tighten the rules of origin specifically to target Chinese investment in the Mexican auto sector. Because CUSMA is a trilateral deal, Canada is often collateral damage in this fight. If the U.S. decides to blow up parts of the deal to spite Mexico, Canada’s "exemptions" will be the first things to burn in the fire.
The idea that we are in a "lesser crisis" ignores the fact that the geopolitical temperature has risen significantly since 2018. We are no longer dealing with a temporary spat over steel; we are witnessing a fundamental realignment of how the world's largest economy interacts with its neighbors.
Preparation is Not a Treaty
Relying on a trade agreement to prevent a crisis is like relying on a fire code to prevent a fire. It gives you the rules for the exits, but it doesn't stop the building from burning.
The Canadian government must stop talking about CUSMA as a shield and start treating it as a battlefield. This requires:
- Direct engagement with U.S. Governors: Trade wars are felt locally. Canada needs to remind border states exactly how many jobs vanish the moment the flow of goods is interrupted.
- Diversification of Critical Infrastructure: We must stop pretending that the U.S. is our only customer, even if it is our most convenient one.
- Aggressive Critical Mineral Development: We cannot let the U.S. dictate the terms of the green transition while we sit on the world's most valuable deposits of the materials required for that transition.
The 2020 agreement was a stay of execution, not a pardon. If Ottawa continues to believe that the legalities of CUSMA will save the Canadian economy from a determined protectionist shift in Washington, the coming crisis will be far worse than anyone is willing to admit. The treaty is a piece of paper; the economy is a living, breathing entity that requires constant, aggressive defense.
Stop looking at the exemptions and start looking at the vulnerabilities.
