This bill proposes amendments to Utah law regarding the authority of federal, state, and local law enforcement officers. It defines key terms like "exercise of law enforcement authority" and establishes under what circumstances state and local officers can recognize a federal employee's exercise of authority. Specifically, it says state and local officers may recognize a federal employee's authority when based on federal law, but not state or local law. It also allows county sheriffs to enter agreements with federal agencies requiring fair compensation for assistance.