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USTR opens broad Section 301 probes as White House sustains tariff strategy

USTR opens broad Section 301 probes as White House sustains tariff strategy

Supreme Court ruling prompted immediate tariff pivot

The Supreme Court found the Trump administration’s use of the International Emergency Economic Powers Act (IEEPA) to impose tariffs unlawful. In response, the White House quickly replaced that authority with a 10 percent duty under Section 122 for a 150-day term, scheduled to expire in late July.

Officials justified the temporary levy as a response to a serious international payment imbalance and a growing U.S. balance-of-payments deficit, as well as a tool to boost domestic manufacturing and to slow the flow of fentanyl across the U.S. border from Canada and Mexico.

USTR launches Section 301 investigations into excess capacity

The Office of the United States Trade Representative (USTR) this week opened investigations under Section 301 of the Trade Act of 1974. The probes target what the agency described as structural excess capacity and production in manufacturing sectors abroad.

USTR said the inquiries will assess whether foreign acts, policies, or practices are unreasonable or discriminatory and whether they burden or restrict U.S. commerce.

Countries and economies named in the investigations

The USTR listed multiple economies as subjects of the Section 301 reviews. The agency said it will examine industrial policies and production practices in these markets:

  • China
  • European Union
  • Singapore
  • Switzerland
  • Norway
  • Indonesia
  • Malaysia
  • Cambodia
  • Thailand
  • Korea
  • Vietnam
  • Taiwan
  • Bangladesh
  • Mexico
  • Japan
  • India

USTR frames probes as defense of U.S. industrial base

USTR Ambassador Jamieson Greer said the investigations reflect a determination not to sacrifice U.S. industry to foreign overproduction. He portrayed the reviews as part of a broader push to reshore critical supply chains and create well‑paying manufacturing jobs across the United States.

Greer argued that structural excess capacity in several partner economies has produced goods beyond domestic demand, displacing U.S. output and deterring investment that would otherwise expand American manufacturing. He warned that the United States has lost significant production capacity in many sectors and lagged behind foreign competitors.

Industry advisers cautioned that Section 301 tariffs, which address unfair trade practices, can be difficult to challenge successfully in court. Pete Mento, Director of Global Trade Management Services at Baker Tilly, told LM that the mechanics of 301 actions make judicial challenges complex.

Mento noted that the government has been collecting information on issues such as forced labor and other unfair practices, an evidence base that could strengthen future 301 cases. He said issues like forced or slave labor, currency manipulation, and intellectual property infringement could all form the factual foundation for U.S. action under Section 301.

Investigation process, timeline, and possible remedies

Mento and USTR officials explained that if the investigations find policies or practices that unreasonably distort trade, the United States could respond with new duties or other measures.

The formal process outlined includes the following stages:

  1. Investigation
  2. Public comments
  3. Hearings
  4. Findings
  5. Imposition of new duties (tariffs)

USTR said a docket for public comments will open on March 17 and that hearings will begin on May 5.

Analysts see limited broader economic impact but note other risks

In a research note, Chris Rogers, head of supply chain research at S&P Global Market Intelligence, suggested the overall economic effect of the recent trade moves may be muted. He said duty rates tied to IEEPA are likely to be replaced by other programs that deliver functionally similar rates.

Rogers added that the global economy has so far proved relatively resilient to tariffs, and that larger near-term risks may stem from uncertainty related to conflict in the Middle East and resulting pressures on oil prices.

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