Battle v. State

Raphael Battle v. State of Maryland, No. 1654, Sept. Term 2019, and No. 485, Sept. Term 2020. Opinion by Arthur, J. CRIMINAL LAW—SUPREMACY CLAUSE IMMUNITY A federal agent has Supremacy Clause Immunity from state prosecution for conduct that violates a state’s criminal law if (1) the federal agent was performing an act that the agent was authorized to perform by the laws of the United States and (2) in performing that authorized act, the agent did no more than what was necessary and proper. A federal agent’s actions were necessary and proper if the agent subjectively believed that the actions…