The United States Conference of Catholic Bishops (USCCB) has joined legislatures, scientists, female athletes, the U.S. Department of Justice, and dozens of advocacy groups to support the protection of women’s sports. The bishops submitted an amicus brief on Sept. 18 urging the Supreme Court to uphold state bans on biological men participating in women’s sports. The submission was added to the more than 50 friend-of-the-court briefs put forward ahead of the upcoming State of West Virginia v. B.P.J. arose from a lawsuit filed by a then-11-year-old boy against the state over its Save Women’s Sports Act after he was not allowed to join a female-only league. “These cases ask whether the Equal Protection Clause or Title IX forbids the states to create female-only athletic competitions,” the bishops wrote.