Key question KQ-38 · Trade, tariffs and sanctions

On 31 Dec 2027, what has ended or cut a US tariff programme in force on 4 Nov 2026: a law of the new Congress, the President, a court, or nothing?

From Q-029 Sealed 6 Nov 2026 Resolves by 31 Dec 2027 Open

Our standing estimate

Six outcomes that together make 100%. Our estimate, scored when it resolves.

President cuts Canada's 50% duty (to 31 December 2027)

33.6% · unlikely · confidence not registered

No such law; the President ends Canada's Section 338 duty, lowers its 50% rate or takes a whole list out of it, and the cut stands on 31 Dec 2027.

F-0251 · Open
No duty is cut (to 31 December 2027)

25.4% · unlikely · confidence not registered

On 31 Dec 2027 no law, presidential act or unstayed court ruling has ended or cut any programme; rises already proclaimed may have taken effect.

F-0254 · Open
President cuts another duty (to 31 December 2027)

21.2% · unlikely · confidence not registered

No law and no Canada cut; the President ends or cuts a Section 232 or 301 programme, its rate, a whole partner or a whole sector, not replaced within 30 days, and the cut stands on 31 Dec 2027.

F-0252 · Open
New Congress cuts duty by law (to 31 December 2027)

12% · very unlikely · confidence not registered

A law of the new (120th) Congress, signed or passed over his veto, ends, cuts or makes subject to Congress's approval a Section 232, 301 or 338 tariff programme, and the cut stands on 31 Dec 2027.

F-0250 · Open
All other outcomes (to 31 December 2027)

4% · almost no chance · confidence not registered

An Act of the outgoing (119th) Congress cuts a programme and no law of the new Congress does, or the documents published by 31 Jan 2028 do not settle which outcome holds.

F-0255 · Open
A court stops a duty (to 31 December 2027)

3.8% · almost no chance · confidence not registered

No law and no presidential cut; a US trade court, appeals court or the Supreme Court rules a programme exceeds its statute, and on 31 Dec 2027 the ruling is final or not stayed and collection under it has stopped.

F-0253 · Open

The situation when it was sealed (6 Nov 2026). The best Senate tariff vote drew 52 votes, 15 short of the 67 an override needs.

How it moved

Each point is a sealed register row. There is one sealed estimate for each outcome so far: a new point is added only when we register a new estimate, and the old one stays listed and scored.

The vertical line is 11 Nov 2026. Numbers match the outcomes above.

Every sealed estimate for this question: outcome number, register row, date sealed, estimate, status
No.	Row	Sealed	Estimate	Status
1	F-0251	6 Nov 2026	33.6%	Open
2	F-0254	6 Nov 2026	25.4%	Open
3	F-0252	6 Nov 2026	21.2%	Open
4	F-0250	6 Nov 2026	12%	Open
5	F-0255	6 Nov 2026	4%	Open
6	F-0253	6 Nov 2026	3.8%	Open

Reassessments

No reassessment yet.

Signposts

What the brief says would move the view, quoted from it.

No signpost is published for this question yet.

Why it matters, by category

Trade, tariffs and sanctions

The debt limit is one lever the brief weighs: borrowing room could run out as early as February 2027, though the projected hard deadline is about February 2028.
Will the new Congress roll back the tariffs?
Most tariffs look set to stay through 2027; a new-Congress law cutting one: 12% by 31 December 2027, our estimate, set by the firm, scored when it resolves. Read it in the brief
Will the courts strike the remaining tariffs, and will importers get their money back?
The firm puts a court ruling stopping a tariff, with no law or presidential cut beside it, at 4% by 3 November 2027 and 4% by 31 December 2027. Read it in the brief
Can the new majority use the budget and the debt limit to force a tariff change?
The firm puts a law of the new Congress cutting a tariff, by any route, at 10% by 3 November 2027 and 12% by 31 December 2027. Read it in the brief
Will most tariffs stay through 2027 unless a deal, court or budget bill trims one?
The likeliest scenario is a presidential cut to Canada's 50% duty, at 34%; no cut at all, 25%. Read it in the brief

Countries it touches

The countries our register links to these forecasts, most often linked first.

How it resolves

The registered words that decide each forecast, quoted unchanged.

F-0250
“Resolves if: An Act of Congress or joint resolution enacted by the new (120th) Congress between 3 Jan 2027 and 31 Dec 2027, signed by the President or passed over his veto by two-thirds of each House, ends, cuts or makes subject to congressional approval a tariff programme in force on 4 Nov 2026 (Section 232, Section 301 or Section 338), and the cut stands on 31 Dec 2027; whatever the President or the courts also do.”
F-0251
“Resolves if: No law counted on AX1 stands; between 5 Nov 2026 and 31 Dec 2027 a proclamation or a published US-Canada arrangement ends the Section 338 duty on Canadian goods, lowers its 50% rate, or takes a whole list (motor vehicles, dairy or alcohol) out of it, and the cut stands on 31 Dec 2027; whatever else the President or a court cuts.”
F-0252
“Resolves if: No law counted on AX1 stands and the Section 338 duty is not cut; between 5 Nov 2026 and 31 Dec 2027 a proclamation, memorandum or USTR notice of action ends or cuts a Section 232 or Section 301 programme in force on 4 Nov 2026 - a whole programme, its rate, a whole partner (for example Mexico or China) or a whole product sector - and the cut stands on 31 Dec 2027, not replaced within 30 days by an equal or higher duty on the same goods.”
F-0253
“Resolves if: No law counted on AX1 and no presidential cut counted on AX2 stands; between 5 Nov 2026 and 31 Dec 2027 the Court of International Trade, the Federal Circuit or the Supreme Court rules that a programme in force on 4 Nov 2026 exceeds its statute, and on 31 Dec 2027 the ruling is final or not stayed and collection under it has stopped.”
F-0254
“Resolves if: On 31 Dec 2027 no law, no presidential act and no unstayed court ruling has ended or cut any Section 232, Section 301 or Section 338 programme in force on 4 Nov 2026 (changes of individual tariff lines and cuts replaced within 30 days do not count); rises already proclaimed may have taken effect.”
F-0255
“Resolves if: An Act of the outgoing (119th) Congress, enacted between 5 Nov 2026 and 2 Jan 2027, cuts a programme in scope and no law of the new Congress does; or the documents published by 31 Jan 2028 do not settle which of the other five scenarios holds on 31 Dec 2027.”

The seals: each statement’s SHA-256 fingerprint

F-0250 sealed 6 Nov 2026SHA-256 44fd3ad536e11e09e06cc9663fb8e8ec546f8d595ef0a763dc158129cb5b2dca
F-0251 sealed 6 Nov 2026SHA-256 07e09ab5e9e1cac5392b5ae66685e317bdeadcf0077f945ac24e85bd6b732103
F-0252 sealed 6 Nov 2026SHA-256 2609bbd816929ec0f20c3c817648f4f4ef1bb66b0c214749c0f13f854c0b82b2
F-0253 sealed 6 Nov 2026SHA-256 a4df112053fe902e5f44f9fe1945efbad67fb19d136087d4488ff22fdc89d6f5
F-0254 sealed 6 Nov 2026SHA-256 2ea0a0656599cdc30adef8c712ea39ae980cf2316d38b778c139255b627f1edf
F-0255 sealed 6 Nov 2026SHA-256 5ea7101aa86da9f6224f47fcc1aeebd35fb8acea9147d58f4852420f17d610ef

Go further

Each probability is our estimate, scored when it resolves. Forecasts are general research on public events and policy; they are not investment, legal or tax advice.