Starting in May 2025, the US government implemented an immigration policy that targeted noncitizen researchers for visa denials, visa revocations, detention, and deportation on the basis of the topics and findings of their work (1). In response, scholars and civil society groups at the Coalition for Independent Technology Research (CITR) documented the policy’s effects on their research and sued the State Department, the Department of Homeland Security, and the Justice Department to stay the policy (2). Scholarly societies, including the Association for Computing Machinery (ACM) (3) and the Association of Internet Researchers (AOIR) (4) issued public statements in support of academics’ freedom of movement. In July 2026, a federal court suspended the policy (5), marking a victory for scientific progress (6). However, threats to freedom of movement remain a powerful tool for repressive governments to force and entice scholars into submission. Scholars and administrators should continue to defend the integrity of science by defending the right to freedom of movement.