The Supreme Court will hear arguments in its latest LGBTQ rights case, weighing the constitutionality of bans passed by nearly half of U.S. states on the practice known as conversion therapy for children. The justices on Tuesday are hearing a lawsuit from a Christian counselor challenging a Colorado law that prohibits therapy aimed at changing sexual orientation or gender identity. Kaley Chiles argues the law violates her freedom of speech by barring her from offering voluntary, faith-based therapy for kids. Chiles has support from President Donald Trump's Republican administration. Colorado argues the measure simply regulates licensed therapists by barring a practice that’s been scientifically discredited and linked to serious harm.