U.S. Launches Section 301 Investigations into Global Manufacturing Overcapacity

Trade Update • March 17, 2026

Key Points

  • U.S. Trade Representative Jamieson Greer initiated Section 301(b) investigations into structural excess capacity and production practices in 16 major economies.
  • Countries under review include China, the European Union, India, Japan, South Korea, Mexico, and several Southeast Asian and European partners.
  • Investigations will determine whether foreign acts, policies, or practices are unreasonable, discriminatory, or restrict U.S. commerce.
  • Public comments on the investigations open March 17, 2026, with submissions due April 15, 2026, and a public hearing scheduled to start May 5, 2026.
  • The USTR may recommend tariffs or other trade remedies if unfair practices are confirmed.
Judge’s gavel on a desk beside a U.S. flag, symbolizing U.S. trade enforcement action

O​​​​​​​​​​​​n March 11, 2026, the U.S. Trade Representative (USTR) has launched investigations under Section 301(b) of the Trade Act of 1974 to examine structural excess capacity and production practices in 16 economies. The goal is to identify whether these practices unfairly burden U.S. commerce or displace domestic manufacturing. The probe targets China, the European Union, India, Japan, South Korea, Mexico, and other countries in Asia and Europe. Public input will be accepted before hearings begin in May, and findings could result in tariffs or trade remedies to protect U.S. manufacturers.

Countries Under Investigation

The Section 301 investigations target 16 economies:

  1. China
  2. European Union (EU)
  3. Singapore
  4. Switzerland
  5. Norway
  6. Indonesia
  7. Malaysia
  8. Cambodia
  9. Thailand
  10. South Korea
  11. Vietnam
  12. Taiwan
  13. Bangladesh
  14. Mexico
  15. Japan
  16. India

Official Statement

“The United States will no longer sacrifice its industrial base to other countries that may be exporting their problems with excess capacity and production to us. Today’s investigations underscore President Trump’s commitment to reshore critical supply chains and create good-paying jobs for American workers across our manufacturing sectors.”
Jamieson Greer, United States Trade Representative
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What Happens Next?

  • March 17, 2026: Docket opens for written public comments.
  • April 15, 2026: Deadline to submit comments and requests to appear at hearings.
  • May 5, 2026: Public hearings begin.

A pre-publication version of the Federal Register Notice is available on the USTR website.

Dockets for submitting comments on the investigation and for requesting to appear at the public hearing are available on the USTR comments portal.

How GHY Can Help?

GHY specializes in helping businesses navigate and reduce the impacts of tariffs through strategic solutions tailored to their needs. Our experts can audit your supply chain to identify inefficiencies, uncover cost-saving opportunities, and ensure compliance with evolving trade regulations. We also employ tariff engineering techniques to optimize product classification and sourcing strategies, minimizing duty exposure and maximizing profitability.

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Contact Us Today! Booking a Meeting, email consult@ghy.com, or call +1 (800) 667-0771.

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