For the first time, more than half of Canadians say they support European Union membership — not as a protest vote, not as an abstract preference, but as a serious policy option. Washington has not noticed.
That is a mistake.
Canada’s candidacy for EU membership is, on its face, a legal implausibility. EU treaties restrict membership to European states, which Canada is not. Accession requires unanimous agreement from 27 governments, each with its own domestic politics and its own reasons to stall. The process alone would consume a generation. So, the easy response is to wave it off — interesting hypothetical, no serious legs.
But the debate is not really about EU membership: It is about Canadian strategic drift. And that is Washington’s problem, whether accession is on the table or not.
Start with economics. The U.S.-Canada trading relationship is the largest on earth. The integration runs deep — not just in goods crossing the border but in supply chains built on the assumption that the two countries share a regulatory environment close enough to treat as a single productive space.
EU accession requires full adoption of the complete body of European law. That would pull Canadian regulations toward Brussels. It does not take a dramatic rupture to cause damage. Regulatory divergence at the margin, sustained over years, grinds away at industries — auto, energy, agriculture, manufacturing — that currently operate without thinking much about the border. They would start thinking about it.
The case for membership rests largely on expanded market access. But Canada already has that. The EU-Canada Comprehensive Economic and Trade Agreement eliminated most tariffs on Canadian exports to the EU years ago, and what remains is modest.
So why the enthusiasm? Because this was never really about trade. The polling reflects political sentiment — a desire to signal that Canada has options, that it is not simply tethered to a difficult neighbor. That is understandable as a mood, but it is not a strategy. And Washington should recognize what it actually is: an argument for institutional realignment dressed up as an economic conversation.
The defense question is harder to dismiss. NORAD is not a treaty relationship in the conventional sense — it is a fused operational structure, the product of 60 years of shared doctrine, interoperable systems and the kind of institutional trust that does not survive ambiguity about first loyalties. Canada’s Arctic border is the United States’ Arctic border. There is no version of Arctic defense that works if Ottawa’s strategic calculus is being filtered through Brussels.
This is not hypothetical. Canada and the EU have already moved toward formal defense cooperation — framed, explicitly, around Europe’s push for strategic autonomy from the U.S. The Permanent Structured Cooperation framework is the vehicle through which European states are pooling defense investment and moving toward operational integration outside NATO’s command structure. Canada signed a formal defense cooperation agreement with the EU last year. The framing was partnership. The trajectory is something closer to convergence.
Washington should be clear-eyed about what that leads to: a Canada that hedges between continental and transatlantic commitments rather than anchoring the former.
Ottawa’s interest in strategic alternatives is not hard to understand. The past few years have not made Washington an easy partner. But the answer to a difficult bilateral relationship is not institutional exit. Canada’s geography does not move. Its Arctic frontage does not become less relevant to American homeland defense because Canadian politicians are irritated with Washington. The structural reality of North American integration does not bend to political sentiment, however genuine.
What makes this moment different from earlier episodes of Canada-EU enthusiasm is the baseline it is starting from. Canada has been falling behind on its continental obligations.
NORAD modernization — the joint early warning system that forms the foundation of North American aerospace defense — has suffered years of Canadian underfunding and slippage on delivery schedules at a time when the threat picture is becoming more serious. The submarine replacement program, critical to North Atlantic and Arctic coverage, remains years from resolution. Canada only reached the NATO two-percent benchmark in defense spending very recently, and capability gaps still exist.
An ally already thinly stretched on core continental commitments does not serve its strategic interests by taking on a second institutional master. Engagement with the EU does not plug those holes. It drains away the political will needed to do so.
Washington should not wait for accession to become likely before engaging in this debate. By the time it becomes likely, the underlying drift will be well advanced. The signal is the problem, not just the destination.
The U.S. does not need a transatlantic Canada. It needs the one next door.
Andrew Latham is a professor of international relations at Macalester College in Saint Paul, Minn., a senior fellow at the Institute for Peace and Diplomacy, and a non-resident fellow at Defense Priorities in Washington.
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