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The Tabularium · Call 2026-09-16-03Open

The US and Mexico do not reach a final agreement on the proposed AI-hardware rules-of-origin restriction within 90 days of this week's USMCA-review talks (by December 15, 2026).

Illicit Trade / Econ SecurityNorth AmericaMexicoUnited StatesChina
Issued No. 78 · 16 Sep 26  ·  Due 15 Dec 26  ·  Opening call 55% — likely

The wording, the opening probability, and the counter-signal below were fixed when this call was published. Updates revise the reading — never the record: the verdict is graded against the opening call.

The trajectory

The call stands at its probability until revised; each dot is a recorded reading.0%50%100%16 Sep 26 — 55% (No. 78): Opening calltodaydue 15 Dec 2655%16 Sep 26

The record since

The call stands as issued — no revisions.

What would overturn it

A joint US-Mexico announcement, USMCA side-letter, or Commerce Department notice confirming agreed rules-of-origin thresholds for AI hardware. Continued negotiation with no signed text by December 15 counts for this call; a signed deal before then counts against it.

The verdict

Open  Resolves by 15 Dec 26 — graded at the weekly Reckoning against the criteria above, and recorded here.

As logged at issue

Mexico and the US are roughly as likely as not to still be without a final AI-hardware rules-of-origin agreement 90 days from now, given how the rules-of-origin fight compounds an already-tense USMCA review — unless Mexico moves quickly to concede the point rather than let it become a bigger bargaining chip.

Cite this call

The Cursus Publicus, Call 2026-09-16-03 — recorded 16 Sep 26. https://archive.cursuspublic.us/calls/2026-09-16-03.html