(CNN) — A majority of the Supreme Court signaled Tuesday it is prepared to rule against Colorado’s ban on “conversion therapy” for minors, with several justices signaling they agree with a licensed counselor in the state who says the law violates her First Amendment rights.

In one of the most significant cases the high court will address this year, the justices were asked to decide if states may ban the discredited practice, which purports to “convert” gay people to heterosexuality or transgender people to cisgender. Roughly half of US states have banned the therapy for minors, Colorado officials told the Supreme Court.

During a relatively low-key and short 90-minute session, several justices appeared to reject the idea the state can regulate “talk therapy” the same way it may regulate

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