US moves to close Nvidia AI chip loophole for China

TL;DR:

  • The US Commerce Department has issued weekend guidance to close a loophole that may have let Nvidia’s most advanced Blackwell chips reach overseas subsidiaries of Chinese companies.
  • One industry source estimates hundreds of thousands of chips may have flowed to Chinese-linked entities in places such as Malaysia during the year the rule went unenforced.
  • The Bureau of Industry and Security says it will now enforce licence requirements for advanced chips sold to China-headquartered firms operating outside China.

The guidance landed after a paper circulating in Washington warned that “the floodgates have quietly opened”. It tightens controls that had loosened when the administration declined to enforce the Biden-era AI Diffusion rule in May 2025, leaving room for Chinese firms’ foreign units to buy high-end chips without a licence.

Why the supply picture matters

For UK buyers, this is less about geopolitics than availability and price. Export controls reshape the global flow of the scarcest AI hardware, and abrupt enforcement changes can ripple through lead times and secondary markets that British firms and cloud providers depend on. Nvidia said the new guidance changes nothing for its own shipments, since Commerce had already imposed a licence requirement on the company directly.

Analysts cautioned the fix is partial. Former State Department official Chris McGuire welcomed the closure but noted a remaining gap: foundries such as TSMC are not required to perform extra due diligence to ensure advanced chips are not destined for Chinese front companies. The guidance also stops short of forcing data centres to stop using or servicing chips already in place — meaning hardware already deployed stays in service.

Looking forward

The episode illustrates how quickly the rules governing AI compute can shift, and how exposed downstream buyers are to decisions made in Washington. UK organisations planning multi-year AI infrastructure should treat chip supply as a strategic risk, not a settled input. Expect continued tightening — and continued loopholes — as enforcement chases an adaptable global supply chain.

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