To require the Congressional Budget Office to conduct an economic review of the economic impact of tariff modifications before implementation.
Key claim: HR4326 would prohibit any tariff or duty modification from taking effect until the Congressional Budget Office publishes an economic impact review on a publicly available website.
Abstract
(HR4326 · 119th Congress) This bill requires the Congressional Budget Office (CBO) to conduct an economic review of the potential economic effects of modifications to tariffs before their implementation. Specifically, the bill prohibits a modification to any tariff or other duty on imports from taking effect until CBO publishes on a publicly available website an economic review of the expected economic impact of the modification. Latest action (2025-07-10): Referred to the House Committee on Ways and Means.
Why this matters
HR4326 would insert a mandatory CBO economic-impact review and public disclosure step between the announcement and effective date of any tariff or duty change, altering the operational timeline importers, exporters, and downstream manufacturers face when planning around tariff actions. If enacted, it would apply broadly across the tariff instruments tracked in this area — Section 232 metals adjustments, de minimis changes, AD/CVD-related modifications — potentially reducing surprise price shocks to consumers but slowing executive tariff responsiveness. As introduced legislation with no reported movement, its practical effect is currently prospective only.