NIST Bars Foreign Scientists from Labs in Sharp Escalation of U.S. Tech Decoupling

The National Institute of Standards and Technology is enforcing new restrictions that cap international researchers at three years and bar evening and weekend lab access, a policy that could force Science reports up to 500 scientists from U.S. facilities by March 31, 2026. The move marks the most significant tightening of scientific collaboration policies at the 125-year-old agency, which sets technical standards underpinning everything from semiconductors to AI systems.

Hundreds of foreign scientists at NIST’s Boulder, Colorado and Gaithersburg, Maryland campuses have been barred from labs during evenings and weekends unless escorted by federal employees, with researchers from certain countries facing complete loss of access by month’s end. The new policy limits international graduate students and postdoctoral researchers to two-year agreements with a one-year extension option, requiring personal approval from acting Director Craig Burkhardt. Graduate programmes typically require five to seven years to complete.

Seven Countries Designated High Risk

Scientists from China, Russia, Iran, North Korea, Cuba, Venezuela, and Syria are classified as “high risk,” with many researchers—particularly from China—informed their lab access will be reviewed by March 31 and terminated if they have exceeded three years or work on sensitive projects like quantum technology or artificial intelligence. Researchers from “medium risk” countries face review by September 30, while those from “low risk” countries, including Five Eyes alliance and G7 nations, have until December 31, 2026.

The restrictions extend even to permanent U.S. residents holding green cards, according to internal sources. Database searches suggest approximately 500 foreign graduate students, postdoctoral assistants, and research scientists work across NIST’s facilities.

No written policies have been distributed to researchers, with most changes conveyed verbally down the chain of command, according to Boulder Reporting Lab, which first reported the story. One NIST researcher told the outlet the communication felt “purposefully nebulous” to make opposition difficult.

Standards Authority at Stake

NIST’s role extends far beyond basic research. The agency sets standards that underlie areas ranging from cybersecurity to semiconductor manufacturing. The lab advances “measurement science”—work that underpins nearly every sector of modern life, including maintenance of the world’s most accurate clock, which supports GPS systems, satellite navigation, power grids and telecommunications.

Gallagher warns the moves could undermine confidence in the agency, long a source of technical foundations relied on by industry and governments globally. The policy arrives as NIST lost hundreds of workers to budget cuts last year, compounding operational strain.

The restrictions directly contradict stated U.S. needs. Just weeks before the policy changes, NIST’s Physical Measurement Laboratory director James Kushmerick told the House Science, Space and Technology Committee that the United States faces a quantum workforce shortage: “We do not have enough domestic or even international talent to fill all the jobs.”

Congressional Pushback Ignored

Representatives Zoe Lofgren (D-CA) and April McClain Delaney (D-MD) sent letters to acting Director Burkhardt on February 19 demanding answers, citing weeks of unanswered congressional inquiries. According to Boulder Reporting Lab, NIST missed a February 25 deadline to brief committee staff and failed to respond to an earlier January 28 request with a February 13 deadline.

In their letter, the lawmakers stated the alleged three-year limit “cuts the U.S. scientific and industrial sectors off from worldwide talent that directly contributes to excellence in cutting-edge fields.” NIST did not respond to requests for comment from multiple outlets, though a spokesperson told WIRED the proposals are “intended to shield US science from theft and misuse.”

Economic Fallout in Quantum Hub

The impact extends beyond federal labs. Icarus Quantum, a startup spun out of NIST Boulder four years ago, received $400,000 from NIST this month to develop quantum networking technology but now faces disruption as the company relies on NIST lab space. Scott Davis, CEO of Golden-based Vescent, a quantum laser manufacturer, said “multiple collaborations with NIST have had brilliant people working on projects that could be relevant to our commercial growth, but they are in limbo because the work was being done by foreign nationals.”

Chris Monroe, director of the Duke Quantum Center who worked at NIST for nearly a decade, said “NIST folks were almost single-handedly responsible for propelling the U.S. to the lead in quantum science and technology,” adding the new rules “will go a long way to ensuring that the U.S. will fall behind.”

Broader Tech Decoupling Accelerates

The NIST restrictions arrive amid accelerating U.S.-China scientific decoupling. According to the Quincy Institute for Responsible Statecraft, U.S.-China scientific collaboration is shrinking selectively: areas of mutual benefit like biomedicine and earth sciences remain moderately robust, while advanced dual-use technologies—AI, aerospace, and new materials—face sharp curtailment.

Senator Tom Cotton (R-AR) recently wrote to the Energy Secretary requesting China-born researchers be prevented from accessing national laboratories, citing concerns they would steal U.S. secrets for China. The approach mirrors restrictions already implemented at Department of Energy labs.

Yet the strategy carries significant risk. A 2023 Nature analysis found China overtook the United States in contributions to the top 1% of highly cited papers, particularly in physics, chemistry, and materials science—suggesting Chinese science is becoming more impactful even as collaboration declines.

What to Watch

The March 31 deadline for “high risk” country researchers will provide the first clear measure of enforcement. If hundreds of scientists are terminated, expect legal challenges based on discrimination and due process grounds, particularly given the lack of written policy documentation.

Watch whether allied nations impose reciprocal restrictions on U.S. researchers. The policy risks fragmenting global standards-setting at precisely the moment when AI safety protocols, quantum encryption standards, and semiconductor specifications require international coordination. China’s National Institute of Metrology could expand influence in ISO and IEC technical committees as NIST’s scientific credibility erodes.

The Senate confirmation timeline for Trump nominee Arvind Raman matters. If confirmed, Raman could formalize or reverse Burkhardt’s policies. Until then, acting director authority allows policy implementation without congressional oversight—a workaround Democrats cannot counter as the minority party.

Colorado Governor Jared Polis’s response merits attention. The state secured federal quantum Tech Hub designation in 2023; if NIST restrictions hollow out the research base, expect pressure for state-funded alternatives or legal intervention. The quantum industry’s $3 billion market potential makes this a core economic development issue, not just scientific policy.