The Section 301 Investigation launched by the Office of the U.S. Trade Representative (USTR) in March 2026 is framed as a response to forced labor. But examining the Investigation Report released in June and the proposed additional tariffs, the true purpose appears to be something else entirely.
The investigation was not designed to assess whether forced labor is occurring in specific countries; rather, its purpose is to determine whether countries have established systems to prohibit imports produced by forced labor and are effectively enforcing them.
The proposed tariff rates, however, cannot be explained by human rights concerns alone. Thailand, Vietnam, and the Philippines have not established import prohibition systems meeting U.S. standards, and face a 12.5 percent tariff rate. Malaysia and Cambodia likewise lack such systems, but face a tariff of only 10 percent.
Malaysia committed to introducing such a system within two years of its 2025 reciprocal trade agreement with the U.S. entering into force; Cambodia made a similar commitment alongside enhanced labor law enforcement. The U.S. is, in short, evaluating countries on whether they have accepted Washington’s trade conditions and commitments. U.S. Trade Representative Jamieson Greer underscored as much; according to the June 5 edition of Business Times, he intends to hold countries to the trade agreements signed over the past year.
