State law creates most local police powers and criminal rules. A city, county, or tribal government funds and governs its agency under local law; a chief or sheriff runs operations; prosecutors make charging decisions; courts decide cases; federal agencies handle federal crimes and can enforce federal civil-rights law.
Criminal law, budgets, department policy, operations, prosecution, oversight, and civil-rights enforcement belong to different actors.
Each institution has a different verb. Writing a rule, funding it, applying it, administering a service, and reviewing a dispute are not the same power.
Enacts criminal law, statewide policing standards, officer authority, records rules, and the framework for local agencies.
Adopts the local budget and policies that its charter or state law assigns, and may create oversight systems.
Exercises appointment, removal, supervision, or policy power only to the extent local law grants it.
Prevents, investigates, and makes arrests for offenses within its legal jurisdiction and agency mission.
Prosecutors decide whether and what to charge under their authority; courts adjudicate cases and legal challenges.
Investigates and litigates qualifying violations of federal law, including patterns or practices that violate federal rights.
Strong-mayor and council-manager cities, independently elected sheriffs, consolidated governments, tribal sovereignty, state police, special police agencies, prosecutors, unions, consent decrees, and civilian oversight bodies divide authority differently.
