U.S. Opens Section 301 Probe Into Korea, China, Japan, EU
The Trump administration has launched a Section 301 investigation into what it calls unfair trade practices, targeting several economies including Korea, China, Japan, and the European Union. The move appears to be a step toward restoring reciprocal tariffs among allies and rivals alike.
Section 301, sometimes dubbed “Super 301,” is a U.S. tool that allows tariffs or other actions in response to foreign government measures the United States deems unfair or discriminatory. The administration has framed the current probe as part of addressing practices that burden U.S. trade.
The list of targeted economies is led by longtime allies and trading partners with which Washington has been pursuing tariff negotiations. The Korean government, along with China, Japan, and the EU, is cited among the major players involved in the review.
Officials have indicated the investigation’s stated aim is to address excess production capacity and related unfair trade practices, while leaving room for the scope to be expanded to other areas. This suggests a broad, potentially ongoing review rather than a narrowly focused inquiry.
As a related move, the administration previously activated a 10 percent, across-the-world tariff for 150 days after a U.S. Supreme Court ruling found reciprocal tariffs to be invalid. The administration also signaled it would pursue a Section 301 investigation in parallel with those tariff measures.
The USTR has said that beyond sectors where overproduction is suspected, additional industries could be added to the probe. Potential targets cited include digital services taxes, drug pricing, market access for rice and seafood, and issues related to marine pollution.
For U.S. readers, the development matters because Section 301 investigations can lead to new tariffs, renegotiations, or policy shifts that ripple through global supply chains, especially in tech, manufacturing, agriculture, and energy sectors. Korea, as a key ally and a major supplier of semiconductors and auto components, sits at the center of supply-chain considerations for American manufacturers and consumers.
The episode also highlights how U.S. trade policy tools from the 1970s remain in play for addressing 21st-century concerns such as digital taxation, pharmaceutical pricing, and environmental standards. The outcome could influence prices, market access, and the competitive positioning of U.S. firms abroad, beyond Korea alone.