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Section 301 of the Trade Act of 1974 (19 U.S.C. § 2411) authorises USTR to investigate, and the President to retaliate against, foreign acts, policies, and practices that are unjustifiable, unreasonable, or discriminatory and that burden or restrict US commerce. The standard remedy menu includes (i) imposition of duties or other import restrictions on the offending country's goods, (ii) withdrawal or suspension of trade-agreement concessions, and (iii) WTO dispute settlement. The 2018-2024 Section 301 China investigation and tariffs established the modern template for using §301 as the legal vehicle for strategic-competition tariffs (see 2024-05-14-us-section-301-tariff-hikes-china).
This is the first Section 301 investigation initiated by the second Trump administration. The six-pronged scope is unusually broad — most historical §301 cases have focused on a single sectoral or regulatory complaint (digital services taxes, IP, technology transfer). Bundling digital-payments grievances with environmental, anti-corruption, and agricultural-market-access claims signals USTR's intent to use §301 as a comprehensive bilateral leverage instrument rather than a narrowly targeted enforcement tool.
The investigation runs in parallel to — but is procedurally distinct from — the IEEPA national-emergency tariff regime imposed on Brazil two weeks later via Executive Order 14323 (2025-07-30-us-eo-14323-brazil-ieepa-tariff). The §301 track survives the SCOTUS ruling in Learning Resources, Inc. v. Trump (Feb 2026) that struck down the IEEPA tariff component, because §301 is an explicit trade-statute authority that the Court did not disturb. As a result, the §301 investigation is now the principal remaining US legal vehicle for tariff-based pressure on Brazil pending the 12-month determination deadline.
targets Banco Central do Brasil's operation of Pix as a state-run instant-payments rail. A finding of unreasonableness could be used to justify tariffs on Brazilian exports, but the more likely lever is bilateral negotiation around access for Visa/Mastercard/PayPal and clearer treatment of foreign electronic-payment providers.
for US producers (after the 2017-2024 quota window expired) is the most "classic" §301 complaint in the basket — direct loss of US export market share to a quantifiable Brazilian tariff change. ADM and Bunge are the most exposed listed names.
tariffs on Brazil terminated by SCOTUS, the §301 12-month determination (statutorily due 15 July 2026) becomes the next major US tariff event in the bilateral relationship. Expect EWZ basis to widen ahead of that date.
Washington (which preceded Brazil's PL 2780 PNMCE critical-minerals vote — see 2026-05-06-brazil-pl-2780-pnmce-critical-minerals-policy) was largely motivated by the impending §301 deadline. Outcome of the meeting will determine whether USTR pulls or applies the §301 trigger.
go straight to a final determination? Recent §301 practice (China 2018, France DST) has used the interim-determination + public-comment loop.
bifurcate the investigation into separate determinations?
emerges from the May 2026 Lula-Trump talks? A negotiated "deal" scenario would likely freeze or terminate the §301 track in exchange for Brazilian concessions on Pix access and ethanol tariffs.