USTR launched Section 301 overcapacity investigations on March 11, 2025, covering 16 economies: China, the European Union, Singapore, Switzerland, Norway, Indonesia, Malaysia, Cambodia, Thailand, South Korea, Vietnam, Taiwan, Bangladesh, Mexico, Japan, and India. Hearings began May 5 at the U.S. International Trade Commission, 500 E Street SW, Washington DC, and run through May 8, 2025. Written comments closed April 15 at 11:59 PM EDT.
For compliance engineering teams, this probe creates immediate uncertainty across HTS classifications tied to imports from all 16 targeted economies. The investigation scope spans automotive, industrial goods, and other sectors where USTR cited foreign overproduction displacing U.S. manufacturing and deterring domestic investment. The notice specifically flagged China and Japan's automotive sectors, referencing firms that are unprofitable or unable to meet interest payments.
The timeline pressure intensifies with a parallel Section 301 forced-labor investigation covering approximately 60 economies. USTR is running this probe on an accelerated schedule targeting completion by July 2025 — the same month the temporary 10% global tariff expires. Trade compliance systems dependent on static rate tables face exposure on two fronts: new duties from the overcapacity probe and potential rate changes when the 10% baseline disappears.
Key Dates for Compliance Teams:
• March 11, 2025: Section 301 overcapacity investigation launched
• April 15, 2025 (11:59 PM EDT): Written comments deadline closed
• May 5-8, 2025: USTR hearings at USITC, 500 E Street SW, Washington DC
• July 2025: Target completion for parallel forced-labor probe; temporary 10% global tariff expires
Nearly 150 representatives from companies, trade groups, foreign governments, and think tanks are expected to testify through Friday. The hearings are not livestreamed, but transcripts will be posted. Trade watchers broadly expect the probe to produce new import duties, particularly as the administration seeks to rebuild tariff leverage following Supreme Court action against earlier global tariffs imposed under national-emergencies authority.
Rate Caching Risk: Systems pulling HTS duty rates for any of the 16 targeted economies — especially high-volume origins like China, Vietnam, Mexico, South Korea, and the EU — should implement validation checks. New Section 301 duties could layer on top of existing rates with minimal lead time once USTR issues determinations.
The question for compliance teams is not whether Washington will act, but how quickly rate changes will propagate and which HTS codes will be affected. With the overcapacity probe covering major U.S. import sources and the forced-labor investigation spanning roughly 60 economies, duty rate volatility is the baseline assumption through Q3 2025.
Engineering teams should audit rate-refresh intervals now. Section 301 actions historically take effect with 15-30 days notice after Federal Register publication. Systems relying on weekly or monthly HTS updates risk calculating duties against stale data precisely when new tariffs hit.