The Office of the U.S. Trade Representative (USTR) has launched what may be the most sweeping use of Section 301 authority in the history of American trade law. On June 2, 2026, USTR released its report and proposed action in 60 parallel investigations targeting forced labor enforcement failures across virtually every major U.S. trading partner. The proposal—covering economies that account for an estimated 99.4% of U.S. imports—signals a fundamental shift in how the Trump Administration intends to pursue its tariff agenda following the Supreme Court’s invalidation of IEEPA-based tariffs earlier this year.

The Strategic Context: Why Section 301?

Less than three weeks after the Supreme Court struck down the President’s International Emergency Economic Powers Act (IEEPA) tariffs in Learning Resources, Inc. v. Trump, USTR initiated 60 parallel investigations on March 12, 2026, against 59 countries and the European Union. The timing is no coincidence. Section 301 of the Trade Act of 1974 provides a well-established statutory framework with decades of judicial validation. While cumbersome—requiring investigations, public comments, hearings, and a reasoned record—it offers something the IEEPA approach did not: legal durability.

With the President’s global 10% tariff under Section 122 set to expire in late July absent Congressional action, the Administration is clearly positioning Section 301 forced labor tariffs as the durable replacement architecture. This is not merely a trade enforcement initiative. It is a legal strategy.

Scope and Structure of the Proposed Tariffs

The breadth of the proposal is staggering. USTR found that 54 of the 60 investigated economies have imposed no legal prohibition on imports of goods made with forced labor. The remaining six have prohibitions on paper but fail to enforce them effectively. On June 3, 2026, USTR proposed the following duty structure:

The Two-Tier Tariff Framework

• 10% additional duties on 14 economies deemed to have partial forced labor import regimes, including Argentina, Bangladesh, Cambodia, Canada, Ecuador, El Salvador, the European Union, Guatemala, Indonesia, Malaysia, Mexico, Pakistan, Taiwan, and the United Kingdom.
• 12.5% additional duties on all other 46 investigated economies, including major trading partners China, Brazil, Japan, and South Korea.
• These duties are stacked on top of all existing tariffs, including MFN duties, prior China Section 301 duties, and antidumping and countervailing duties.

Key Exclusions and Carve-Outs

Notably, USTR did not propose a blanket tariff on all goods. Annex A excludes a wide range of strategically sensitive categories, including energy products and fuels, critical minerals and rare earth metals, many agricultural and food products, certain pharmaceuticals, and specified electronics. These exclusions reflect both practical supply chain realities and political calculus—but they also raise significant questions about whether the chosen remedy is genuinely calibrated to address forced labor concerns or whether it is primarily a tariff architecture tool.

Compliance Implications: What Companies Must Do Now

For compliance professionals and corporate counsel, the forced labor tariff proposal raises immediate and urgent questions. Comments are due July 6, 2026, and USTR hearings begin July 7, 2026. This is not a spectator sport. Companies with supply chains touching any of the 60 investigated economies—which is essentially every significant importer—must take the following steps now:

Action Items for Compliance Teams

• Map your supply chain exposure. Identify which products originate in investigated economies, assess existing duty stacking impacts, and model the financial exposure under both the 10% and 12.5% rate scenarios.
• Review exclusion eligibility. Annex A exclusions are product-specific and technical. A careful review of HTS classifications against the exclusion list is essential before assuming coverage or exemption.
• Evaluate comment opportunities. Companies with legitimate supply chain transparency programs, robust forced labor due diligence, or products in excluded categories may have strong grounds for substantive comment or hearing testimony.
• Do not assume UFLPA compliance is sufficient. The proposed Section 301 tariffs operate independently of the Uyghur Forced Labor Prevention Act. Products excluded from Section 301 tariffs may still face detention under UFLPA or CBP withhold release orders.
• Prepare for stacking complexity. The tariff stacking implications—MFN duties, plus prior Section 301 duties on Chinese goods, plus antidumping and countervailing duties, plus the new forced labor tariffs—create calculation complexity that demands immediate customs counsel engagement.

The Legal Architecture Question

The Administration’s use of Section 301 as a substitute for IEEPA is legally significant but not without risk. Courts have previously scrutinized whether USTR adequately addressed public comments in modifying Section 301 tariffs, and that precise question is currently pending at the Supreme Court in a case arising from the first Trump Administration’s China tariffs. USTR’s apparent effort to build a robust administrative record—450+ written comments, 60 witnesses, consultations with 46 economies—suggests awareness of those vulnerabilities. Whether it will be enough remains to be seen.

For compliance professionals, the legal durability question matters because tariff strategies built on uncertain authority carry their own risk. A well-structured, administratively grounded Section 301 action is a different kind of risk profile than emergency IEEPA tariffs. Companies would be wise to begin modeling both the finalization scenario and the litigation-driven invalidation scenario in their planning.

Bottom Line

The USTR Section 301 forced labor tariff proposal is not a conventional trade enforcement action. It is a comprehensive tariff architecture designed to survive judicial scrutiny and achieve broad coverage following the collapse of the IEEPA framework. Compliance teams must engage now—through the comment process, through supply chain mapping, and through proactive engagement with customs counsel. The July 6 comment deadline is not far off. The time to act is today.