Makes a State ineligible for Child Abuse Prevention and Treatment Act (CAPTA) grant money if the State takes adverse actions or discriminates against a parent, guardian, or legal representative for opposing any medical, surgical, pharmacological, psychological, or social steps to transition or affirm a minor’s gender identity, based on the parent’s judgment of the child’s biological sex at or before birth. It also gives any affected parent, guardian, or legal representative a private right of action to sue the Department of Health and Human Services to stop or reverse a grant award and require returned funds to the Treasury.