Requires a memorandum of understanding between the chief law enforcement official of a county and the federal law enforcement agency in order for a federal law enforcement agency to conduct law enforcement duties within a county

HB 1578 requires a written agreement (memorandum of understanding) between a Missouri county sheriff (or city law enforcement chief) and any federal law enforcement agency before that federal agency can conduct law enforcement duties within the county or city. The bill gives local law enforcement officials the authority to negotiate the terms of this agreement, which must be signed by both the local official and the state Department of Public Safety director. This policy change directly affects county sheriffs, city law enforcement chiefs, and federal agencies operating in Missouri, establishing a mandatory procedural step for federal law enforcement activities. The bill aims to clarify cooperation protocols but does not alter existing state or federal law enforcement authority.