The U.S. Justice Department said it filed a complaint on Friday challenging a law in Alabama that criminalizes some gender-affirming treatments for transgender youth.
Earlier this month, Alabama's Republican governor signed into law the bill, which makes it a felony punishable with up to 10 years of imprisonment for providing voluntary medical treatments, including hormone therapy, puberty blockers and surgery to help align physical characteristics to the gender identity of a minor.
The Justice Department's complaint alleges that the "new law's felony ban on providing certain medically necessary care to transgender minors violated the equal protection clause" of the U.S. Constitution's Fourteenth Amendment.
The department asked the court to issue an immediate order to prevent the law from going into effect.
Civil rights groups, including the American Civil Liberties Union, had also vowed to challenge the law in court when it was signed.