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US opens new unfair-trade probes to rebuild Trump's tariff pressure

Published by Global Banking & Finance Review

Posted on March 11, 2026

5 min read

· Last updated: April 1, 2026

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US opens new unfair-trade probes to rebuild Trump's tariff pressure
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By David Lawder and Ismail Shakil WASHINGTON, March 11 (Reuters) - U.S. President Donald Trump's administration on Wednesday launched a new trade investigation into excess industrial capacity in 16

US launches unfair-trade probes to rebuild Trump's tariff pressure

By David Lawder and Ismail Shakil

US Trade Investigations and Tariff Policy Developments

WASHINGTON, March 12 (Reuters) - U.S. President Donald Trump's administration said on Wednesday it was launching two trade investigations into excess industrial capacity in 16 major trading partners and into forced labor, rebuilding tariff pressure after the Supreme Court tore down much of Trump's tariff program last month.

Countries Targeted by the Investigations

China, the European Union, India, Japan, South Korea and Mexico are among the economies that could face new tariffs by this summer under the investigation of unfair trade practices, said U.S. Trade Representative Jamieson Greer.

Other partners subject to the excess-capacity probe under Section 301 of the Trade Act of 1974 are Taiwan, Vietnam, Thailand, Malaysia, Cambodia, Singapore, Indonesia, Bangladesh, Switzerland and Norway. Canada, the second-largest U.S. trading partner, was not included.

China's Response

China said on Thursday the U.S. claim of overcapacity was a "false proposition" and Beijing opposed "political manipulation under this pretext". China is against all forms of unilateral tariff measures, foreign ministry spokesperson Guo Jiakun said at a regular press conference.

Trade Surpluses and Industrial Capacity Issues

EU and Other International Reactions

U.S. LOOKING AT TRADE SURPLUSES, UNDERUSED CAPACITY

The 27-nation European Union has said it wants to stick to the terms of a deal signed at Trump's Turnberry golf course last July, and that any new tariffs should reflect the broad 15% overall U.S. levy agreed then.

European Parliament lawmakers, who have repeatedly delayed a vote on that deal, said uncertainty remained.

"Who can guarantee that the final outcome will not mean even higher tariffs for the EU? It is not enough to simply assume - on both sides - that we will end up within the Turnberry framework. We need clarity," trade committee chair Bernd Lange wrote on X. 

Focus on Manufacturing Sectors

Greer told reporters the investigations "will focus on economies that we have evidence appear to exhibit structural excess capacity and production in various manufacturing sectors, such as through larger persistent trade surpluses, or underutilized or unused capacity". 

USTR's official notice cited the automotive sector in China and Japan, saying a growing number of companies were unprofitable or unable to meet interest payments.

Japan and Other Asian Economies

Japan is scrutinizing details of the probe but will continue to implement its existing trade agreement with the U.S., Chief Cabinet Secretary Minoru Kihara told a press conference.

USTR said although China's electric-vehicle capacity outstrips national demand, top EV maker BYD was "aggressively expanding" its overseas manufacturing footprint, with factories in Uzbekistan, Thailand, Brazil, Hungary and Turkey, and was expected to expand capacity in Europe, where existing automotive plants operate at only 55% of capacity.

Taiwan’s cabinet said in a statement that the agreement on reciprocal trade it signed with the U.S. last month established consensus on many issues potentially covered by the probe. Indonesia said its agreement with the U.S. remained the main guideline in bilateral trade relations.

USTR cited large German and Irish surpluses in goods trade with the United States as evidence of EU excess capacity. It also bemoaned Singapore's, Norway's and Switzerland's hefty surpluses in trade with the U.S., alongside what it said was evidence of "structural excess capacity and production".

Forced Labor Probe and Section 301

Details of the Forced Labor Investigation

U.S. ALSO PLANS PROBE ON FORCED LABOR

Greer said he would initiate another Section 301 probe on Thursday, under a provision to ban U.S. imports of goods produced with forced labor. It will cover shipments from more than 60 countries.

The U.S. has already cracked down on solar panels and other goods from China's Xinjiang region under the Uyghur Forced Labor Prevention Act, signed into law by president Joe Biden.

Greer said he wanted other countries to enforce bans on goods produced with forced labor similar to those enshrined in a nearly century-old trade law.

Allegations Against China

The U.S. alleges that Chinese authorities have established labor camps for ethnic Uyghur and other Muslim groups. Beijing denies allegations of abuse. 

Timeline and Next Steps

Greer said he hoped to conclude the Section 301 investigations, including proposed remedies, before temporary tariffs imposed by Trump in late February expire in July.

After the Supreme Court struck down Trump's global tariffs as illegal under a national emergencies law on February 20, he imposed a 10% tariff for 150 days under Section 122 of the Trade Act of 1974.

Public comments on the excess-capacity probe will be accepted through April 15 and a public hearing will be held around May 5.

Upcoming Diplomatic Engagements and Tariff Impact

U.S. Treasury Secretary Scott Bessent is due to meet Chinese counterparts in Paris this week to set the stage for Trump to meet Chinese President Xi Jinping in Beijing at the end of the month.

Trump's tariffs on Chinese goods were effectively cut by 10 percentage points by the Supreme Court decision and subsequent temporary tariffs, reducing U.S. leverage on China trade and export controls.

(Reporting by David Lawder in Washington and Ismail Shakil in Ottawa; Additional reporting by Eduardo Baptista in Beijing, Heejin Kim in Seoul, Ben Blanchard in Taipei, Stefanno Sulaiman in Jakarta and Panarat Thepgumpanat in Bangkok, Philip Blenkinsop in Brussels; Editing by Kevin Liffey)

Key Takeaways

  • The Section 301 investigations could prompt new tariffs on economies like China, EU, India, Japan and others by this summer – a step to restore negotiating pressure after the IEEPA tariffs were invalidated (nationaltoday.com).
  • The forced‑labor probe spans more than 60 countries and may extend existing actions under the Uyghur Forced Labor Protection Act to other regions (nationaltoday.com).
  • These moves follow the Supreme Court’s landmark February 20, 2026 decision that the International Emergency Economic Powers Act does not authorize unilateral presidential tariffs, forcing the administration to pivot to Section 301 authority (en.wikipedia.org).

References

Frequently Asked Questions

Which countries are targeted by the new US trade investigations?
The investigations target China, the European Union, India, Japan, South Korea, Mexico, Taiwan, Vietnam, Thailand, Malaysia, Cambodia, Singapore, Indonesia, Bangladesh, Switzerland, and Norway.
What is the purpose of the Section 301 investigations announced by the US?
The Section 301 investigations aim to address unfair trade practices and excess industrial capacity, which could potentially lead to new tariffs.
Will imports produced with forced labor be affected by the new probes?
Yes, a separate Section 301 probe is being launched to ban US imports of goods produced with forced labor, covering over 60 countries.
When are public comments and hearings scheduled for the capacity probe?
Public comments are accepted through April 15, and a public hearing is planned around May 5.
Why did the US introduce new tariffs after the Supreme Court decision?
After the Supreme Court struck down Trump's global tariffs, temporary tariffs were imposed under Section 122 to restore US leverage on trade negotiations.

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