The coalition filed an amicus brief urging a federal judge in Idaho to block enforcement of the law while the lawsuit moves forward, arguing that the measure is unconstitutional and undermines the rights and safety of transgender students. In the brief, Bonta and the coalition argue that the law violates the Equal Protection Clause of the U.S. Constitution by stigmatizing transgender students and denying them access to common school facilities based on their gender identity. “Idaho’s law is an unconstitutional threat to the safety and privacy of transgender and gender-conforming students,” Bonta said in a statement. The students are seeking a preliminary injunction to stop the state from enforcing the law while their case proceeds. California has required all public schools since 2014 to allow students to use single-sex facilities that correspond with their gender identity.