The U.S. Department of Justice has filed lawsuits against four states—Massachusetts, Maine, Oregon, and Washington—for denying federal agents, including those from ICE and DHS, the issuance of confidential undercover license plates. The DOJ argues that these state policies undermine federal law enforcement efforts and compromise public safety. The lawsuits allege that the actions of these states counteract the constitutional responsibilities of federal law enforcement, particularly in immigration enforcement. This legal battle highlights tensions between federal authorities and states that have adopted sanctuary policies.