Kaley Chiles, a Colorado counselor, said the ban violates her First Amendment rights by "censoring" her conversations with clients.

Colorado is among roughly half the states that prohibit the practice of trying to change a person’s sexual orientation or gender identity through counseling.

The U.S. Supreme Court agreed on Monday to hear a Christian therapist's challenge on free speech grounds to a Democratic-backed Colorado law banning "conversion therapy" intended to change a minor's sexual orientation or gender identity.