An OpenAI researcher who worked on GPT-4.5 had their green card denied

Kai Chen, a leading AI researcher at OpenAI who has lived in the U.S. for 12 years, was denied a green card despite his significant contributions to their flagship model GPT-4.5. This denial has raised concerns about the impact on America's AI leadership and highlights broader challenges faced by foreign talent under current immigration policies. Additionally, the U.S. has implemented strict visa regulations affecting hundreds of international students and researchers, with experts warning that these policies may deter top-tier scientists from pursuing careers in the U.S., as seen with figures like Ashish Vaswani and Wojciech Zaremba.