US Trade Scrutiny Widens on Korea: AI, Labor & Customs

Korea pledged $350 billion in US investment. In return, it received a longer list of complaints. The 2026 National Trade Estimate (NTE) report, released by the US Trade Representative (USTR) on March 31, marks a clear escalation of US trade scrutiny — one that stretches well beyond tariffs and cars into the territory of AI procurement, forced labor, and fishing fleets. For foreign investors operating in or through Korea, the rules of engagement have quietly shifted.

A Widening Net of US Trade Scrutiny

Each year, the USTR submits the NTE report to Congress, identifying foreign market access issues. However, this document is far more than a checklist. It serves as the foundational text for future action, including investigations under Section 301 of the Trade Act of 1974 — a provision granting the USTR broad authority to respond to trade practices it deems unfair. In effect, appearing in the report places a country’s policies on a formal watch list.

Korea is among 16 countries currently under Section 301 review. For businesses, the report’s expansion signals new layers of regulatory and political risk. The playbook for trade disputes is being rewritten in real time.

In addition to recurring complaints about automotive market access, the 2026 report introduced several new areas of concern. These include Korea’s AI infrastructure procurement, its value-added tax (VAT) structure, and a perceived lack of cooperation in combating customs duty evasion. Furthermore, the report explicitly added categories for forced labor and environmental norms. The message is blunt: nearly any domestic rule can become a trade issue.

New Social and Environmental Trade Barriers

Among the new items, the most striking involve social and environmental conduct. The USTR report specifically cited a Withhold Release Order (WRO) — a powerful US Customs and Border Protection tool that blocks goods suspected of being made with forced labor — issued against salt harvested from Taepyeong Salt Farm in South Korea.

Supply chain ethics are no longer a matter of corporate social responsibility alone. They are now a diplomatic instrument.

In addition, the report called on Korea to strengthen enforcement against illegal, unreported, and unregulated (IUU) fishing by its distant-water fleets. For corporate leaders and investors, this signals a broader shift. Labor practices and environmental compliance, once handled internally, are now live trade risks with real diplomatic weight.

AI Procurement and Digital Sovereignty in the Crosshairs

Perhaps the most forward-looking challenge involves Korea’s burgeoning AI sector. The USTR alleges that tenders for GPUs and cloud services, run by Korea’s Ministry of Science and ICT, were structured to exclude American cloud service providers in favor of domestic champions.

This accusation strikes at the heart of Korea’s strategy to build a competitive domestic AI industry. By contrast, the US frames it as a clear barrier to its world-leading tech firms. The tension here is not merely bilateral — it is a preview of a global debate.

Digital sovereignty is clashing directly with free trade principles. The outcome of this dispute could set a precedent for how governments worldwide are permitted to nurture their own strategic tech industries. For investors in Korean AI infrastructure, that uncertainty is now priced into the risk calculus.

A Call for a Unified Korean Response

As some traditional tariff powers face legal challenges, the US is leaning more heavily on the flexible Section 301 framework. The report’s new structure — which includes a dedicated category for “Non-Market Policies and Practices” — is designed to capture a wide range of industrial policies that were previously beyond trade law’s reach.

In response, the institute argues that Korea must abandon its siloed, ministry-by-ministry approach to trade issues. Therefore, it calls for a unified, government-wide strategy that coordinates information and response across agencies. A fragmented Korean response, the institute warns, could lead to greater uncertainty and costly missteps in negotiations.

For any company operating in Korea, this internal policy debate matters directly. However, the deeper concern is structural: if Korea cannot present a coherent position, US counterparts gain leverage at every stage of negotiation. Meanwhile, the business environment absorbs the cost of that disorganization — in the form of regulatory unpredictability and delayed policy clarity.

The 2026 NTE report is not a verdict. Nevertheless, it is a warning — and a detailed one. For investors and executives, the question is no longer whether US trade pressure on Korea will intensify, but how fast, and across which sectors.