A probe initiated by the Trump administration, led by the FTC, alleges that the World Professional Association for Transgender Health (WPATH) built its transgender treatment guidelines for minors on evidence that its own leaders privately acknowledged was limited and uncertain.

The Federal Trade Commission (FTC) and four Republican-led states have filed a lawsuit against the World Professional Association for Transgender Health (WPATH), alleging it misled parents and doctors about the safety of youth transgender treatments.