American voters head to the polls on November 3, 2026, and a lot of Canadians are quietly hoping the midterms will defuse the tariff war. Here's the uncomfortable truth: the tariffs hitting Canadian exports weren't created by Congress, and a Democratic Congress probably couldn't, or wouldn't, simply delete them. What changes is subtler, and in some ways harder for Canada: less appetite for one-person tariff-making in Washington, but more appetite for tougher rules on what counts as "North American." That's the deal behind the headlines, and it matters for your prices, your job, and the loonie.
Key takeaways
- The 50% Section 338 tariffs on ~$20–22 billion of Canadian goods (effective August 22, 2026) are presidential authority, Congress doesn't vote to keep them in place, and a midterm result doesn't automatically end them.
- Canada answered dollar-for-dollar: 15/25/50% counter-tariffs on C$27.6 billion of US imports, effective September 8, 2026, plus a C$7.5 billion support package for workers and businesses.
- A Democratic Congress is likelier to restrain unilateral tariff-making while pushing tougher North American content and labour rules, pressure on Canada through standards, not just duties.
- The bigger dates: USTR comments on the 2027 CUSMA joint review are due January 12, 2027, and the US has threatened 50% tariffs on Canadian autos effective January 1, 2027.
- For households, the risk isn't the election, it's pass-through prices and tariff-exposed jobs. Roughly 73% of US imports from Canada still enter duty-free under CUSMA, so most everyday trade is untouched.
Where things stand right now
The current tariff architecture has three layers, and it's worth keeping them straight because they change through different doors:
- US Section 338 tariffs (Aug 22, 2026): Three presidential proclamations imposing 50% duties on about $20–22 billion of Canadian imports, dairy, alcohol, motor vehicles as the stated triggers, but the lists sprawl across electronics, furniture, textiles, cement, machinery and more. No CUSMA exemption. This is the first time Section 338 has ever been used, and legal challenges in the US Court of International Trade are widely expected.
- Canada's counter-tariffs (Sep 8, 2026): Surtaxes of 15%, 25% and 50% on C$27.6 billion of US-origin imports, announced at 874 tariff lines (Finance Canada trimmed the final list to 629 lines on August 26, removing fish and seafood before the measures took effect). Existing steel and aluminum counter-tariffs rose from 25% to 50% to match US rates.
- US escalation (Sep 15 and Sep 29, 2026): Washington added more products to the 50% list and then went further, outright import prohibitions on specified Canadian goods (including most alcoholic beverages, whey/dairy and motorcycles) effective September 29.
Canada also moved C$7.5 billion in support: $3.5 billion in rapid-response worker and employer supports, a $2 billion Canada Strong Diversification Fund, expanded EI flexibilities, and liquidity streams for tariff-hit businesses. Our companion pieces cover what the counter-tariffs mean for your shopping bill at how counter-tariffs affect your shopping bill and the relief programs at the tariff relief programs for businesses.
Why the midterms won't end the tariffs
Here's the constitutional plumbing most coverage skips. Congress holds tariff power in the US Constitution, but it has spent a century delegating that power to the president through statutes like Section 338 of the Tariff Act of 1930. The president didn't need Congress's permission to impose these tariffs, and Congress doesn't need to vote to sustain them, they persist until the president modifies or terminates them, a court strikes them down, or Congress passes new legislation clawing the authority back.
That last path is the one midterm-watchers are really betting on. Could a Democratic Congress pass a law curbing presidential tariff authority? In principle, yes, several bills along those lines circulate after every tariff wave. In practice, the obstacles are steep: the president would veto it, overriding a veto needs two-thirds of both chambers, and tariff fights rarely produce that kind of bipartisan supermajority. Section 338, unlike the older Section 122 emergency tariffs (which expired after their fixed term), has no built-in expiry date. These duties don't time out.
There's also a quieter reason a Democratic Congress might not rush to rescue Canada: tariff scepticism is bipartisan in 2026. Many Democrats spent years arguing the US got a bad deal from globalized trade. Their objection to the current approach is often about the method, unilateral presidential action, erratic timing, CUSMA circumvention, not about protecting Canadian exporters.
What a flipped Congress could actually change
So what does change? Two things, both indirect but real:
1. Restraint on unilateral tariff-making. A Democratic majority would be far more inclined to legislate guardrails around delegated tariff powers, mandatory economic-impact reviews, congressional-approval triggers above certain thresholds, or narrowing the emergency statutes. That wouldn't remove today's tariffs, but it would make the next escalation harder and give businesses the one thing they crave most: predictability.
2. Tougher North American content and labour rules. This is the part Canadians should read carefully. Democrats have consistently pushed for higher regional value-content thresholds, stricter labour standards, and stronger environmental enforcement inside North American trade deals. The next CUSMA joint review, with USTR comments due January 12, 2027, is where those demands land. For Canada, that could mean new compliance costs in autos and manufacturing even if the headline tariff rates never move. It's pressure through standards rather than duties, and it's arguably harder to retaliate against.
Note too that Canada has been playing midterm politics itself: Industry Minister Mélanie Joly said the counter-tariff product list was designed with particular US states in mind, aiming to generate political pressure ahead of the November 3 vote. Ottawa is betting that tariff pain in swing-state America translates into a Congress that reins in the White House.
What actually moves the needle
Forget election-night wishful thinking. The dates that will decide the next phase:
- January 1, 2027: The US has threatened 50% tariffs on Canadian autos and parts. Ontario's auto belt is the biggest single exposure in this dispute, and the federal support package was partly built around it.
- January 12, 2027: Deadline for USTR public comments on the 2027 CUSMA joint review. The US declined to renew the agreement in its current form in July 2026, triggering annual reviews; the deal now runs to a July 1, 2036 termination unless all three countries agree to extend it. Canada and Mexico both want renewal, Washington is the holdout.
- US court challenges: Section 338 has never been used before, and trade lawyers expect the legal questions to be tested in the US Court of International Trade. A court ruling could do what Congress can't, but litigation takes time, and nobody should bank on it.
One piece of context worth holding onto: despite all the noise, about 73% of US imports from Canada still enter duty-free under CUSMA. The tariff war is real and targeted, but it covers a slice of the trade relationship, not the whole thing. That's why your grocery bill and your mortgage are affected indirectly (inflation risk, Bank of Canada caution, see the October rate decision and your mortgage) rather than overnight.
What this means for your money
- Prices: Counter-tariff pass-through lands gradually as warehouse inventory clears (30–90 days). Expect targeted pressure on appliances, furniture and some electronics, not broad-based inflation. See what the counter-tariffs make more expensive.
- Jobs: The risk concentrates in autos, steel, aluminum and forestry. The federal package's $3.5 billion worker-support stream, EI flexibilities and retraining programs exist for exactly this scenario.
- The loonie: Trade uncertainty is one reason the Canadian dollar has been under pressure, which in turn makes imports pricier across the board. Our explainer at explainer on the weak Canadian dollar walks through it.
Practical next steps
- Don't make big financial decisions (mortgage renewal, large purchases) betting on a post-election tariff reversal, the authority structure doesn't work that way.
- If you work in autos, steel, aluminum or forestry, know the federal support programs now, before you need them: tariff relief programs for Canadian businesses.
- For big-ticket purchases (appliances, furniture), check the counter-tariff list and compare Canadian or non-US options, the 50% rate on some goods is real.
- Watch January 2027, not November 2026: the CUSMA review comments and the auto-tariff threat are the dates that matter.
The bottom line
The midterms change the politics around tariffs, not the tariffs themselves. Section 338 duties don't need Congress's permission to exist and don't expire on their own, and a Democratic Congress would more likely trade unilateral tariff-making for tougher content rules that squeeze Canada in a different way. The real inflection points are January 1 and January 12, 2027. Plan for the tariffs you have, not the election you want.
This article is general information about Canadian and US trade policy, not financial or investment advice. Tariff policy changes frequently; consult a qualified professional before making financial decisions based on trade developments. Information current as of October 2026.
Sources
- Mondaq, Gloves Off: Canada Answers U.S. Section 338 Tariffs Dollar-for-Dollar (September 2026)
- Fasken, New US Tariffs on Canadian Goods: Key Takeaways for Canadian Businesses (August 2026)
- Withum, Recent Tariff Developments: Canada, IEEPA Refunds and Russian Energy (October 2026)
- Feedstuffs, USTR seeks input on 2027 USMCA joint review (October 2026)
- Hashtag Investing, American States Push to Preserve CUSMA (October 2026)
- Money.ca, How Trump's Canada tariffs hit your wallet (September 2026)
- Campbell Stocks, Canada Sets September 8 Counter Tariffs, Announces C$7.5 Billion Support Package
Quick answers
Frequently asked questions
01
Will the midterms end the tariffs on Canada?
No. The 50% Section 338 tariffs on about $20–22 billion of Canadian goods (effective August 22, 2026) are presidential authority, Congress holds tariff power in the Constitution but has spent a century delegating it through statutes like Section 338 of the Tariff Act of 1930. The president didn't need Congress's permission to impose them, and Congress doesn't vote to sustain them: they persist until the president modifies or terminates them, a court strikes them down, or Congress passes new legislation clawing the authority back. Section 338, unlike the older Section 122 emergency tariffs, has no built-in expiry date, the duties don't time out. And a Democratic Congress might not rush to rescue Canada anyway: tariff scepticism is bipartisan in 2026, and many Democrats object to the method (unilateral presidential action, CUSMA circumvention) rather than protecting Canadian exporters.
02
What happens to CUSMA?
The next milestone is the 2027 joint review: USTR public comments are due January 12, 2027. The U.S. declined to renew the agreement in its current form in July 2026, triggering annual reviews, so the deal now runs to a July 1, 2036 termination unless all three countries agree to extend it. Canada and Mexico both want renewal; Washington is the holdout. A Democratic Congress would likely push tougher North American content and labour rules inside the deal, higher regional value-content thresholds, stricter labour standards, stronger environmental enforcement, which could mean new compliance costs for Canadian autos and manufacturing even if headline tariff rates never move. Context worth holding onto: despite the noise, about 73% of U.S. imports from Canada still enter duty-free under CUSMA.
03
Can Congress stop the tariffs?
In principle, yes, by passing a law curbing delegated presidential tariff authority; bills along those lines circulate after every tariff wave. In practice, the obstacles are steep: the president would veto it, overriding a veto needs two-thirds of both chambers, and tariff fights rarely produce that kind of bipartisan supermajority. The more realistic midterm scenario is restraint rather than reversal: a Democratic majority would be likelier to legislate guardrails, mandatory economic-impact reviews, congressional-approval triggers above certain thresholds, or narrowing the emergency statutes, which wouldn't remove today's tariffs but would make the next escalation harder.
04
When is the next CUSMA review?
The 2027 joint review process is already underway: USTR comments are due January 12, 2027. That is where demands for tougher North American content and labour rules will land. The other date that matters more than election night is January 1, 2027, the day the U.S. has threatened 50% tariffs on Canadian autos and parts, with Ontario's auto belt as the biggest single exposure. The federal government's C$7.5 billion support package, $3.5 billion in rapid-response worker and employer supports, a $2 billion diversification fund, expanded EI flexibilities, was partly built around that scenario.
