Why tariff review starts with source records, not tariff tables
A tariff rate is the last mile. The earlier signal is often a notice, hearing, exclusion window, agency action, or ruling.
The table is not the first signal
Import teams usually notice a risk after someone asks for a landed-cost answer. By then, the source event may already be in motion. Traverse treats the tariff table as one layer beside policy notices, hearings, rulings, deadlines, and agency decisions.
The operating question is narrower
The useful question is not whether trade policy changed. It is whether a change touches a product line, origin, authority, case, supplier, or keyword that already matters to the team.
What to review
Start with one repeated HTS line, origin country, authority, or case family. Source-backed Paid review gives Traverse a stable target for follow-up and cited handoff.
Turn this issue into Paid review.
Use the public source layer first. Upgrade when the same product, origin, authority, case, or keyword needs full output and source-backed handoff.