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An OpenAI researcher who worked on GPT-4.5 had their green card denied | TechCrunch
Kai Chen, a Canadian AI researcher working at OpenAI who's lived in the U.S. for 12 years, was denied a green card, according to Noam Brown, a leading research scientist at the company. In a post on X, Brown said that Chen learned of the decision Friday and must soon leave the country. "It's
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OpenAI Researcher Behind GPT-4.5 Forced to Leave US After Green Card Denial - Decrypt
Despite advocating for high-skill immigration, OpenAI's CEO Sam Altman has thus far been silent on the incident. An OpenAI researcher who helped develop GPT-4.5 had her green card application rejected last week, forcing her to leave the United States after living and working in the country for 12
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An OpenAI researcher crucial to GPT-4.5 development faces deportation after green card denial, sparking concerns about U.S. AI leadership and immigration policies.

In a surprising turn of events, Kai Chen, a Canadian AI researcher at OpenAI who has lived in the United States for 12 years, had her green card application denied last week. This decision has forced Chen, who played a crucial role in developing GPT-4.5, to leave the country, potentially impacting America's AI leadership
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.Chen's colleagues at OpenAI have expressed their dismay at the situation. Noam Brown, a leading research scientist at the company, stated, "It's deeply concerning that one of the best AI researchers I've worked with [...] was denied a U.S. green card"
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. Another OpenAI employee, Dylan Hunn, emphasized Chen's importance, describing her as "crucial" for GPT-4.5, one of OpenAI's flagship AI models1
.This incident highlights the growing challenges faced by the American tech sector under tightened immigration policies. The U.S. AI industry heavily relies on foreign talent:
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.The denial of Chen's green card is part of a larger trend:
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.The immigration crackdown has had a significant impact on the scientific community:
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While OpenAI CEO Sam Altman has previously advocated for easier high-skill immigration pathways, he has not commented publicly on Chen's situation
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. Chen plans to work remotely from Vancouver "until [the] mess hopefully gets sorted out," according to Noam Brown1
.The denial of Kai Chen's green card application and her subsequent forced departure from the U.S. raises serious questions about the future of AI research and development in the country. As the global competition for AI talent intensifies, policies that make it difficult for skilled researchers to remain in the U.S. may have long-term consequences for America's position as a leader in artificial intelligence.
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