Trump Escalates Trade War with New Investigations of Partners

Mar 12, 2026, 2:37 AM
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The Trump administration has announced a significant escalation in its trade policy, launching a series of investigations into more than a dozen key trading partners. This move, characterized as the next phase of President Donald Trump’s ongoing trade war, is expected to lead to new tariffs aimed at addressing perceived unfair practices in international trade.
The Office of US Trade Representative will formally probe major economies, including the European Union, Mexico, and China, which are among the top five sources of US imports. Other countries targeted for investigations include Singapore, Switzerland, Norway, Indonesia, Malaysia, Cambodia, Thailand, Korea, Vietnam, Taiwan, Bangladesh, Japan, and India under Section 301 of the Trade Act.
US Trade Representative Jamieson Greer outlined the focus of these investigations, stating they will look into economies with structural excess capacity in manufacturing sectors. This includes nations exhibiting larger trade surpluses or underutilized production capacities. Greer anticipates that the investigations will reveal various unfair trading practices.
In addition to these investigations, the US will initiate a separate inquiry into the import of goods produced with forced labor, reinforcing existing bans under Section 307 of the Tariff Act of 1930. This ban has been strengthened by the Uyghur Forced Labor Prevention Act, passed in 2021, which specifically targets goods produced in China’s Xinjiang region.
Currently, the US maintains a blanket 10% tariff on all trading partners, a measure implemented following a Supreme Court ruling that invalidated many of Trump’s previous country-specific tariffs. The court ruled that Trump had overstepped his authority by using the International Emergency Economic Powers Act to impose these tariffs.
Greer expressed a desire to conclude the upcoming investigations before the 150-day period of the current tariff expires. He emphasized the urgency of these investigations, stating that a quick resolution is preferable to ensure potential new tariffs can be implemented promptly.
The response from trading partners is expected to be robust, particularly since many have recently established framework trade agreements with the US For instance, Mexico is a signatory to the United States-Mexico-Canada Agreement (USMCA), negotiated during Trump’s first term. The implications of these new investigations on such agreements remain unclear.
The European Union, the US’s largest trading partner, had reached a trade deal last summer, but the future of this agreement is now uncertain. The EU has paused the ratification process in light of both the Supreme Court’s decision and ongoing tensions with the US over trade issues. Bernd Lange, a prominent member of the European Parliament, expressed concerns that the combination of the Supreme Court ruling and Trump’s new tariff measures has created "pure tariff chaos," leading to confusion and uncertainty among trading partners.
The investigation into Switzerland has drawn particular attention, especially after Trump disclosed at the World Economic Forum that he had imposed higher tariffs on Switzerland due to a personal grievance with its then-president. Originally set at 39%, the tariff was later reduced to 15% following discussions with various stakeholders, including Swiss companies like Rolex.
As the Trump administration sets its sights on these new investigations, the international trade landscape is poised for further disruptions. The outcome of these inquiries could reshape existing agreements and influence trade relations for years to come, as the US continues to prioritize its economic interests.
With the potential for fresh tariffs and heightened scrutiny on trade practices, both allies and adversaries of the United States will need to navigate an increasingly complex trade environment. These developments underscore the administration's ongoing commitment to an "America First" trade policy, which aims to bolster domestic manufacturing and address trade deficits.

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