The Supreme Court hears oral arguments on the ability of states to restrict treatments for minors whose gender identity doesn't align with their sex assigned at birth.

Chase Strangio made history Wednesday when he became the first openly trans attorney to argue before the US Supreme Court. An attorney with the American Civil Liberties Union, Strangio argued against a Tennessee law denying gender-affirming care for minors.

Justice Samuel Alito grilled ACLU attorney Chase Strangio, the first-ever openly trans attorney to present at the high court, to repeatedly cast doubt on whether being transgender is “immutable” and thus protected by anti-discrimination laws.

Court documents referred to ACLU lawyer Chase Strangio, a biological female who identifies as a man and uses male pronouns, as "Mr."

For Chase Strangio, the professional path that’s led to this moment – in which he’ll have 15 minutes to present an argument defending gender-affirming care for trans youth before the Supreme Court – cannot be unwoven from his life outside the courtroom.

Chase Strangio will be the first openly transgender attorney to argue before the nation's highest court, representing families who say Tennessee’s ban on health care for transgender minors leaves their children terrified about the future.