On April 23, the Liberty Justice Center filed an amicus brief arguing that an Oregon law violates the First Amendment by prohibiting the recording of some conversations but not others—for example, allowing civilians to record on-duty police officers without informing them, but prohibiting such recording of politicians or other government officials. The brief, filed in the U.S. Court of Appeals for the Ninth Circuit, argues that because this law regulates recording (a form of speech) based on its content, it is subject to the greatest First Amendment scrutiny.