The Supreme Court took away one tariff power — so Washington reached back to a law from 1930 that nobody had ever used — updatesCorrections and revisions to this NewsNYou analysis.https://newsnyou.com/analysis/us-canada-section-338-tariffs/2026-09-09T12:00:00+02:00NewsNYourevisit: Resolved canada-retaliates-on-time (yes), updated the matching domino step to confirmed past tense with the final figures, and added one citation.https://newsnyou.com/analysis/us-canada-section-338-tariffs/#rev-2026-09-09T12:00:00+02:002026-09-09T12:00:00+02:00<p>revisit.js flagged the 8 Sep 2026 deadline as passed and still open. Canada's Department of Finance and three independent customs-law trackers confirm the counter-tariffs took effect on schedule, at the announced rates and coverage, with a companion $7.5bn domestic support package — a finalized, in-force measure, not an announced intention. (canada-retaliates-on-time: 88% (open) → canada-retaliates-on-time: resolved yes)</p>revisit: Added one citation and moved canada-retaliates-on-time, with a dated note.https://newsnyou.com/analysis/us-canada-section-338-tariffs/#rev-2026-09-02T17:15:00+02:002026-09-02T17:15:00+02:00<p>revisit.js flagged canada-retaliates-on-time as judgeable within 7 days. Carney has since confirmed no further talks are scheduled and Canada's Department of Finance published the finalized product list for the 8 September counter-tariffs — both materially strengthen the case the deadline holds, with the one condition that previously could have delayed it (a talks resumption) now explicitly ruled out. (canada-retaliates-on-time: 72% (open) → canada-retaliates-on-time: 88% (open))</p>