US takes step to halt Nvidia AI chip shipments to Chinese overseas subsidiaries

The US Department of Commerce moved Sunday to close a loophole that for the past year allowed Chinese companies to buy the world’s most advanced AI chips through their overseas subsidiaries. The new guidance, issued in an unusual weekend announcement, mandates that license requirements now apply to any entity headquartered in China, regardless of where that entity is physically located. The loophole had been inadvertently opened in May 2025, when the Commerce Department announced it would not enforce the AI Diffusion rule enacted by the previous administration. That rule had restricted access to cutting-edge processors such as Nvidia’s Rubin and Blackwell chips, as well as AMD’s most advanced offerings. The decision to suspend enforcement created a gap that Chinese firms quickly exploited. One chip industry source with deep supply-chain knowledge estimated that hundreds of thousands of these restricted chips had been acquired by Chinese companies through their overseas subsidiaries during the year the door was left open. A technology expert and former State Department official described the situation as a “HUGE problem,” noting that Chinese companies had been buying these chips “very likely at scale.” Nvidia and AMD did not immediately respond to requests for comment. The Commerce Department’s move on Sunday effectively closes the most significant channel through which advanced American chips were reaching Chinese AI developers. The immediate impact will be felt by Chinese AI firms that had grown dependent on Nvidia’s Blackwell architecture for training large language models and other computationally intensive tasks. With that supply line severed, these companies must now pivot to domestic alternatives. The most obvious beneficiary is Huawei, whose Ascend chip series has been steadily improving in performance and software compatibility. What many casual observers miss is that the loophole’s closure does more than just block chip shipments. It forces Chinese AI companies to commit to Huawei’s ecosystem at a critical moment. Huawei has been investing heavily in its own chip design tools and software stack, but adoption had been slow because Nvidia’s CUDA platform remained the industry standard. With no access to Blackwell or Rubin, Chinese developers will have no choice but to optimize for Huawei’s architecture. This dynamic accelerates Huawei’s chipmaking ambitions in ways that a simple export ban never could. The company now gains a captive market of sophisticated users who will debug, refine, and demand improvements to its hardware. Over the next 18 months, the quality gap between Huawei’s chips and Nvidia’s offerings may narrow faster than Washington anticipated. The Commerce Department closed one loophole on Sunday, but it may have inadvertently opened another—one that strengthens the very competitor it sought to contain.

The US Department of Commerce on Sunday moved to close a year-old potential loophole it had created that may have led companies to export ‌the world’s most advanced chips – such as Nvidia’s most sophisticated Rubin and Blackwell processors, as well as AMD’s...

The US closing the overseas subsidiary loophole forces Chinese AI firms to rely on domestic alternatives, accelerating Huawei’s chipmaking ambitions.

The development adds to a wider China semiconductors story in which companies are being judged on execution, capital access, regulatory fit and the credibility of their regional expansion plans.

For business readers, the important question is whether this becomes an isolated announcement or part of a more durable operating pattern across customers, financing channels, partners and public-market expectations.