The world governing body for competitive swimming, FINA, has banned most trans female athletes from participating in elite levels of competition.
Based in Lausanne, Switzerland, the organization announced June 19 that it would institute the new policy the following day, June 20.
This is just the latest in a barrage of efforts, particularly in the United States, to ban trans women athletes from competing against their cisgender peers.
Eighteen states, including Texas and Florida, have passed legislation banning transgender students from participating in school sports consistent with their gender identity.