The Supreme Court has agreed to decide whether state and local governments can enforce laws banning conversion therapy for LGBTQ+ children, in a Colorado case.

More than 20 states restrict conversion therapy, which health providers say dangerously attempts to change young people’s gender identity or sexual orientation.

The Supreme Court on Monday said it would review a Colorado law that bars mental health professionals from practicing “conversion therapy” for minors, a discredited practice that attempts to change a person’s sexual orientation or gender identity.