The US science agency NIST is reportedly moving to restrict foreign scientists from its labs, with sources indicating a lack of clear communication and short notice given to those affected. The move has created a sense of chaos, with some critics arguing that it is an attempt to target specific nationalities without explicitly doing so. The proposed rules have not been formally written or announced, leading to confusion and concern among those impacted. The motivations behind the move are unclear, but it has sparked debate about national security, racism, and the treatment of foreign researchers.