The US Commerce Department closed a loophole on Sunday that let Chinese AI firms buy Nvidia's most advanced processors through overseas subsidiaries. The new guidance, posted to the department's website, extends export-licence requirements to advanced chips sold to any entity headquartered in China, regardless of where that entity is physically located.
For about a year, a Chinese AI company barred from buying Nvidia's best processors at home could have a subsidiary in a country like Malaysia buy them instead. The shift is subtle but consequential: the control now follows the parent company's nationality rather than the address on the loading dock. That's precisely the seam that overseas subsidiaries had been operating in.
What Chips Are Affected
The chips at stake are the most capable on the market, including Nvidia's Rubin and Blackwell processors and AMD's MI350x. One industry source with deep supply-chain knowledge estimated to Reuters that hundreds of thousands of advanced chips may have reached Chinese-linked entities abroad during the window the loophole was open.
How the Loophole Opened
That window traces to a specific decision. In the last days of the Biden administration, the Commerce Department finalised the so-called AI Diffusion rule, a sweeping framework for governing where advanced chips could go. In May 2025, the Trump administration said it would not enforce that rule. The practical effect was to leave the overseas subsidiaries of Chinese firms in an ambiguous position for almost a year. The new guidance closes the ambiguity.
What the Guidance Does and Doesn't Do
The guidance stops short of the most disruptive option. It does not require data centres already running the chips to stop using them, nor does it cut off servicing of advanced computing equipment such as servers. The action is aimed at future flows, not at clawing back hardware that has already shipped. This limits the immediate operational shock while tightening the tap going forward.
The Broader Context
The move fits a pattern of leakage and patching that has defined US chip policy. Washington has restricted China's access to advanced chips since 2022 and widened the rules repeatedly, yet enforcement keeps running into workarounds, from third-country subsidiaries to outright smuggling. US prosecutors have separately pursued a case alleging that a Thai company helped route Nvidia chips to Alibaba, a reminder that controls written in Washington are only as strong as their weakest border.
Nvidia and AMD did not immediately respond to requests for comment. The companies are caught in a familiar bind: China remains a large potential market, and tighter rules narrow it further. For Beijing, the closure removes one of the cleaner legal routes to frontier silicon, leaving it leaning harder on stockpiles, domestic chips, and the murkier channels Washington is still chasing. The harder part, as ever, is enforcement: a guidance document redraws the line, but it does not police it.
What Developers Should Know
If you work in AI infrastructure or cloud provisioning, this affects hardware procurement roadmaps for any entity with Chinese ties. Expect tighter scrutiny on supply chains and longer lead times for Nvidia's Rubin and Blackwell GPUs. For developers building on Chinese AI platforms, the pool of available frontier silicon just shrank further, potentially accelerating reliance on domestic alternatives like Huawei's Ascend chips. Keep an eye on export license requirements when ordering hardware for overseas subsidiaries — the rules now track headquarters location, not shipping address.
