Washington Closes the Back Door: How China's AI Firms Quietly Got America's Best Chips

.

A Loophole That Nobody Was Supposed to Notice

On a quiet Sunday, the U.S. Department of Commerce published an unusual piece of emergency guidance. No press conference. No advance notice. Just a clarification posted to a government website — one that revealed a significant gap in America's semiconductor export controls had been open for almost a year.

The guidance, issued by the Bureau of Industry and Security (BIS) on June 1, 2026, states clearly: companies headquartered in China require an export license to receive America's most advanced AI chips — even if those companies are physically located outside China. That sounds obvious. The problem is, it apparently wasn't being enforced.

How the Gap Opened

The story begins in May 2025, when the Trump administration announced it would not enforce the so-called AI Diffusion Rule — a sweeping framework issued in the final days of the Biden administration that had imposed global licensing requirements on AI chip exports. The Trump administration found the rule too burdensome on allies and said it would replace it with something better.

What happened instead was a gray zone. BIS stopped enforcing certain license requirements but did not clearly spell out which ones still applied. That ambiguity, whether intentional or not, created an opening. Chinese AI companies with subsidiaries in third countries — most notably Malaysia — could, according to experts, purchase Nvidia's most powerful Blackwell and Rubin processors without needing a license at all.

A paper circulating in Washington before the guidance was issued put it bluntly: "The floodgates have quietly opened."

Hundreds of Thousands of Chips — Maybe More

Nobody knows the exact scale of what slipped through. One industry insider with detailed supply-chain knowledge estimated the number of chips involved could be in the hundreds of thousands. Given that a single Nvidia Blackwell server rack can cost millions of dollars and carries enormous computing power, that figure represents a substantial potential transfer of AI capability to Chinese-controlled entities.

Former State Department official Chris McGuire, now a senior fellow at the Council on Foreign Relations, called the situation a "HUGE problem" in a public post. Chinese companies, he wrote, had been purchasing these chips "very likely at scale."

What Washington Is — and Isn't — Doing About It

The new BIS guidance now makes clear that license requirements apply to any entity headquartered in China, regardless of where it physically operates. A Tencent subsidiary in Malaysia, for example, would be treated the same as Tencent in Shenzhen.

Nvidia confirmed the guidance changes nothing for the company itself — BIS had already communicated chip restrictions directly to the firm via letter. AMD, another major producer of sought-after AI chips, had not publicly responded at time of publication.

However, the guidance stops well short of a full corrective. Data centers that have already installed affected chips are not required to remove or stop using them. And according to McGuire, at least one significant loophole remains open: chipmakers like Taiwan-based TSMC are still not required to perform enhanced due diligence to verify that high-end AI chips they manufacture are not destined for Chinese front companies. TSMC declined to comment.

The Bigger Picture: China's AI Race Can't Be Ignored

The episode illustrates a persistent challenge for Washington: export controls are only as strong as their enforcement — and the line between strategic flexibility and unintended access can be razor-thin. The Chinese Communist Party has made AI development a central pillar of its military and economic strategy, and its companies have proven resourceful at finding alternative paths to Western technology.

Congress has signaled growing alarm. BIS received a 23 percent budget increase for fiscal year 2026, with bipartisan support directed specifically at semiconductor-related enforcement. And in late 2025, the Department of Justice launched "Operation Gatekeeper," disrupting a network accused of illegally exporting more than $160 million worth of AI chips to China and Hong Kong.

The Sunday guidance is a step in the right direction. But whether it comes too late — and whether remaining gaps will be closed before they are exploited further — remains an open question.

.

Sources:

1. Reuters – U.S. takes step to halt Nvidia AI chip shipments to Chinese firms outside China: https://www.reuters.com/world/china/us-takes-step-halt-nvidia-ai-chip-shipments-chinese-firms-outside-china-2026-05-31/
2. CNBC – U.S. takes step to halt Nvidia AI chip shipments to Chinese firms outside China: https://www.cnbc.com/2026/05/31/us-takes-step-to-halt-nvidia-ai-chip-shipments-to-chinese-firms-outside-china.html
3. Bureau of Industry and Security (BIS), U.S. Department of Commerce – Official Press Release on AI Diffusion Rule Rescission: https://www.bis.gov/press-release/department-commerce-announces-rescission-biden-era-artificial-intelligence-diffusion-rule-strengthens
4. Morrison Foerster – Managing Export Control Risks in the AI Chip Ecosystem: https://www.mofo.com/resources/insights/260209-managing-export-control-risks-in-the-ai-chip-ecosystem
5. CSIS – Understanding U.S. Allies' Current Legal Authority to Implement AI and Semiconductor Export Controls: https://www.csis.org/analysis/understanding-us-allies-current-legal-authority-implement-ai-and-semiconductor-export
6. Finnegan – Reversal of Certain Artificial Intelligence Export Control Rules: https://www.finnegan.com/en/insights/ip-updates/reversal-of-certain-artificial-intelligence-export-control-rules.html

.