On September 4, 2026, Defending Education (DE) filed a reply brief in the U.S. Court of Appeals for the Tenth Circuit in Defending Education et al. v. Sullivan et al., its challenge to Colorado’s “preferred pronoun” law. DE and the other plaintiffs believe sex is biological and fixed at birth, and they want to speak in a way that matches that belief. The brief argues that Colorado officials are trying to avoid accountability for their unconstitutional acts by misrepresenting what the law in question clearly does: criminalize “misgendering” and “deadnaming.”
Read the full reply brief below:
