Specialist law enforcement agency
law enforcement agency which specialises in the types of laws it enforces
coast guard
border guard
Federal Reserve Police
Pentagon Force Protection Agency
traffic police
Diplomatic Security Service
customs agency
railroad police
water police
United States Park Police
Ranger Corps
United States Department of Veterans Affairs Police
United States Mint Police
United States Postal Inspection Service
Federal Air Marshal Service
United States Pentagon Police
transit police
anti-corruption agency
Bureau of Indian Affairs Police
campus police
United States Secret Service
Financial Crimes Enforcement Network
gaming control board
IRS Criminal Investigation
National Oceanic and Atmospheric Administration Fisheries Office of Law Enforcement
Smithsonian Police
U.S. Immigration and Customs Enforcement