Four families in Florida sued the state on Thursday over new rules prohibiting gender-affirming care for transgender youth, arguing the bans violate the US Constitution and should be thrown out. The two new rules from Florida’s Boards of Medicine and Osteopathic Medicine prohibit medical professionals in the state from providing gender-affirming care to minors in the state with gender dysphoria, including by administering puberty blockers, providing cross-sex hormone therapy and performing “sex reassignment surgeries, or any other surgical procedures, that alter primary or secondary sexual characteristics.” The rules provide an exception to the hormone therapy and puberty blocker provisions for minors that were undergoing such treatments prior to the effective date of the rules. The Board of Medicine’s rule went into effect on March 16 and the Board of Osteopathic Medicine’s rule goes into effect March 28.