Twenty-one attorneys general from across the nation are seeking to block Idaho’s school bathroom law.

Washington Attorney General Bob Ferguson and New York Attorney General Letitia James, both Democrats, are leading an effort to oppose the controversial Idaho law. Passed by the GOP-dominated 2023 Legislature, Idaho’s Senate Bill 1100 mandates that students use bathrooms and locker rooms that align with their “biological sex.”

The law remains mired in federal court. A U.S. Court of Appeals panel put the law on hold in late October.

“Allowing students to use bathrooms and changing rooms that correspond with their gender identity helps them feel accepted and does not pose a threat to anyone,” Ferguson said in a news release. “In Washington, where the rights of transgender students are protected, public schools report no instances of transgender students harassing others in bathrooms or locker rooms.”

The attorneys general filed a brief in federal court Thursday opposing the Idaho law. The coalition includes attorneys general from California, Colorado, Connecticut, Delaware, Hawai‘i, Illinois, Maine, Maryland, Massachusetts, Michigan, Minnesota, Nevada, New Jersey, North Carolina, Oregon, Pennsylvania, Rhode Island, Vermont and Washington, D.C.

Laura Guido of the Idaho Press first reported on the brief Thursday.