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.
Were forced labor the primary objective, the focus would be squarely on human rights and labor standards. This Section 301 investigation is, in effect, an extension of trade negotiations, not a human rights inquiry.
Thailand and Vietnam remain at the framework agreement stage, leaving room for further negotiation. Both should study the agreements reached by Indonesia and Malaysia, identify what Washington actually wants, and shape their responses to advance ASEAN integration.
From Bilateral to Collective
The lesson from the reciprocal tariff negotiations is that ASEAN member states negotiated individually rather than collectively, and in doing so missed an opportunity to convert U.S. external pressure into a driver of regional integration. Three corrective actions are needed. First, institutional reforms demanded by the U.S., such as customs procedures and certification systems, should be pursued as shared ASEAN goals. Second, market opening and the removal of non-tariff barriers promised to the U.S. should be extended to all trading partners in accordance with the WTO’s Most-Favored-Nation principle and used to advance the development of ASEAN’s single market. Third, ASEAN should collectively implement measures to prevent circumvention exports and harmonize Rules of Origin, channeling Chinese investment toward upgrading regional industries.
During the 2025 reciprocal tariff negotiations, individual ASEAN countries faced pressure to make concessions. Although the bloc advocates for a single market and single production base, the differing compromises countries have made on non-tariff barriers, customs procedures, and certification systems now make it harder to treat ASEAN as a single market.
Many of the institutional reforms the U.S. is seeking align with ASEAN’s own integration agenda: streamlining customs processes, digitizing clearance, improving regulatory transparency, harmonizing licensing and approval procedures, and mutually recognizing certification systems are all priorities of the ASEAN Economic Community (AEC). Framing these as shared ASEAN challenges would allow concessions to the U.S. to serve double duty as a spur to regional integration.
ASEAN, as an advocate for free trade under WTO rules, should also ensure that any elimination of non-tariff barriers agreed with the U.S. is extended to all trading partners, in line with the most-favored-nation (MFN) principle.
On circumvention exports, ASEAN has both an external and an internal reason to act. Washington views Chinese investment in the region as a key driver of export circumvention; but local industries are equally frustrated by their governments’ failure to manage the flood of semi-finished and intermediate goods from China. Collective measures to curb circumvention and boost local procurement would serve both purposes, facilitating regional industrial upgrades and spurring growth in supporting industries.
Forced labor is not the real objective, and ASEAN is not being asked to resist the United States. Rather, the challenge is whether it can transform U.S. pressure into a catalyst for deeper regional integration. If it can harmonize customs procedures and regulations and dismantle non-tariff barriers, Section 301 may come to be remembered not as a tool of trade coercion but as the moment ASEAN took a decisive step toward functioning as one market rather than eleven separate ones.
