The 9th U.S. Circuit Court of Appeals has blocked an Arizona law banning transgender girls from participating in female sports teams, ruling it discriminatory. The court found no evidence that transgender girls on puberty blockers have an athletic advantage over other girls. The ruling affects two plaintiffs, a 15-year-old and an 11-year-old, who can continue playing on girls' teams while the case proceeds. The decision highlights that Arizona's law categorically bans transgender girls without considering individual circumstances. LGBTQ+ rights advocates argue such laws are anti-transgender attacks. Arizona officials, including Tom Horne, criticized the ruling and expect to challenge it at the U.S. Supreme Court.