FILE - In this March 30, 2022 file photo Oklahoma Gov. Kevin Stitt signs a bill in Oklahoma City that prevents transgender girls and women from competing on female sports teams. Civil rights groups have filed a federal lawsuit on behalf of three transgender Oklahoma schoolchildren against the state's new anti-transgender school bathroom bill. The lawsuit filed in federal district court in Oklahoma City on Tuesday, Sept. 6, 2022 argues that the law requiring students to use only the bathroom of the sex listed on their birth certificate is unconstitutional. (AP Photo/Sean Murphy, File)