Track tariff rate changes, effective dates, notices, proclamations, and source records that can affect landed-cost review.
This page is the public entry point. It explains the issue, links to the public tools that surface the primary records, and routes repeat work into review.
Use this when the first question is which notice, proclamation, agency action, or authority changed the duty layer.
Use this when shipment timing, entry assumptions, quote updates, or customer communication depends on the effective date and transition language.
Use this when the change needs to be mapped back to HTS lines, origins, exclusions, remedies, and landed-cost scenarios.
A tariff rate change can affect pricing, sourcing, filing, and customer communication. The source and effective date need to stay attached to the calculation.
Traverse connects rate checks to Actions and source paths so a duty answer can be reviewed when the underlying source changes.
Track the source record, authority, effective date, affected HTS lines, origin coverage, exclusions, and any downstream duty scenario that needs recalculation.
The rate tells the cost layer, but the effective date controls shipment timing, pricing updates, filing assumptions, and customer communication.
They connect the change to HTS and origin review scope, identify affected scenarios, and keep the source record attached to the recalculation.
Secretary Rubio visited Colombia on September 8, 2026, signing MOUs on civilian nuclear cooperation and critical minerals development but announcing no tariff reductions on Colombian goods. Congress is urged to assess how current U.S. tariffs have affected bilateral trade and may consider measures to codify, terminate, or adjust them in FY2027 appropriations.
CRS's updated WTO primer documents mounting institutional stress, MC14 (March 2026) produced no ministerial declaration and saw the lapse of the 27-year e-commerce customs-duty moratorium after Brazil and Turkey blocked renewal. U.S. tariffs imposed under Trump since 2025 have generated WTO dispute filings and retaliatory measures, while the Appellate Body remains non-functional since 2019 and reform talks continue...
The Trump Administration declined to extend USMCA in its current form in July 2026 and is pursuing bilateral negotiations with Mexico, potentially targeting an interim arrangement by end-2026. U.S. tariffs on Mexican imports remain in effect, creating economic uncertainty for North American businesses while Congress evaluates whether USMCA revisions require legislative approval.
Tie effective dates and source records back to the duty scenarios they affect. Watch rate changes.