U.S. Tightens Export Controls to Block China Subsidiary Route for Advanced AI Chips, Adding Pressure on Nvidia Sales

The U.S. Department of Commerce has moved to shut down a long-standing workaround in semiconductor export controls that enabled China-linked buyers to source advanced AI chips through overseas subsidiaries. Updated guidance issued May 31 now requires export licenses for advanced computing items sold to entities headquartered in China or Macau, even if the purchasing unit is a subsidiary located in third countries such as Malaysia or Singapore. Industry sources say the gap had allowed large volumes—reportedly hundreds of thousands—of Nvidia's Blackwell and Rubin processors to reach Chinese-controlled operations through indirect channels. Under the prior framework, Chinese companies could establish operations in permissive jurisdictions and buy leading Nvidia chips without tripping licensing requirements that would apply to direct shipments to China. The revised guidance targets entities headquartered in Country Group D:5, which includes China, regardless of where the purchasing subsidiary is based. U.S. restrictions on advanced AI semiconductors have been tightening since 2022 and have shifted repeatedly. A December 2025 allowance permitted limited exports of the H200 variant. Further revisions through early 2026 left suppliers and customers uncertain about the next change. The AI Diffusion rule introduced in 2025 was intended to serve as the overarching framework, but the subsidiary route emerged as one of the most consequential weaknesses in the regime. Nvidia CEO Jensen Huang has publicly acknowledged the company has "largely conceded" much of the direct AI chip market in China to domestic competitors such as Huawei. For Nvidia investors, the new guidance closes what amounted to a meaningful backdoor revenue channel that helped offset the impact of formal curbs. If the subsidiary pathway had been supporting demand for hundreds of thousands of high-end chips, the newly blocked volume suggests the market may not have fully reflected the loss of this route. The policy shift may also reverberate across crypto markets. Projects focused on decentralized AI compute networks, tokenized GPU marketplaces, and AI-driven DeFi products depend on the supply and pricing of advanced chips. AI-themed tokens have already shown sensitivity to Nvidia-related headlines, and tokenized equity products tied to Nvidia or the broader semiconductor sector carry similar exposure.