I just sent this letter to the chief judge of my local federal district court urging him to protect courthouse access for trans people. If you like, you can copy this letter, tweak it, and send it to the federal court or agency of your choice. Screw Rep. Nancy Mace.
https://docs.google.com/document/d/1VzfxFoAHircZJkh_p1oN1LLZxykbBuany6kaVj_b8WU/edit?pli=1&tab=t.0