EXECUTIVE BRANCH

FEDERAL LAW ENFORCEMENT AGENCIES
and branches within major departments with law enforcement responsibilities

JUSTICE

Bureau of Prisons
Drug Enforcement Administration
Immigration and Naturalization Service
U.S. Marshals Service
FBI-

TREASURY

Bureau of Alcohol, Tobacco & Firearms
Internal Revenue Service
U.S. Customs Service
U.S. Secret Service

DEFENSE

Defense Protective Service
Naval Criminal Investigative Service
National Security Agency
Army Criminal Investigation Command
Air Force Office of Special Investigations

CONGRESS

Library of Congress Police
U. S. Capitol Police

Enforcement or Security branches within the following departments

AGRICULTURE
COMMERCE
HEALTH and HUMAN SERVICES
National Institutes of Health
Food and Drug Administration
STATE
TRANSPORTATION
ENVIRONMENTAL PROTECTION AGENCY
FEDERAL EMERGENCY MANAGEMENT AGENCY
GENERAL SERVICES ADMINISTRATION

INSPECTOR GENERAL OFFICES

Agency for International Development

Department of Agriculture

Department of Commerce

Department of Defense

Department of Education

Department of Energy

Department of Health and Human Services

Department of Housing and Urban Development

Department of the Interior

Department of Justice

Department of Labor

Department of State

Department of Transportation

Department of the Treasury

Environmental Protection Agency

Federal Deposit Insurance Corporation

Federal Emergency Management Agency

General Services Administration

Government Printing Office

National Aeronautics and Space Administration

Nuclear Regulatory Commission

Office of Personnel Management

Railroad Retirement Board

Small Business Administration

Social Security Administration

Veterans Affairs

JUDICIAL BRANCH- Supreme Court Police

INDEPENDENT AGENCIES

AMTRAK Police Department

SMITHSONIAN

National Zoological Park Police

Office of Protection Services

TENNESSEE VALLEY AUTHORITY- Police

U. S. POSTAL SERVICE-
Postal Inspection Service -- Postal Police

NON FEDERAL LAW ENFORCEMENT AGENCIES

STATE: (Examples: do not apply to every state)

State Police

State Highway Patrol

State Parkway Police

State Thruway Police

State Lake Patrol

State Parkway Police

State Park Rangers

Airport Police (some at state level)

State Game & Fish

State Capitol Police

State University Police

Investigative/Enforcement Agencies:
(Do not apply to every state)

State Bureau of Investigation

State Narcotics Bureau

State Liquor Enforcement Agency

Attorney General

State Gaming Commission

State Horse Racing Commission

Agencies such as

State Depts of Human Services

Consumer Fraud

Pharmacy Board

State Treasury Department

COUNTY/CITY

Sheriff

County Precinct Constable

County Police Department

City Police

City Marshal

Town Marshal

Township Police

Village Police

Metropolitan Police (multi-city area)

City Park Police

OTHER:

School District Police

Community College Police

Utility District Police

Transit Police

Railroad Police (private-public)

NICB-insurance investigative unit (private-public)

Port Authority Police

Harbor Police

Beach Patrol

Airport Police

Housing Authority Police

The above list is not complete. New types of law enforcement agencies
or offices with criminal investigative/security responsibilities are
continually being created, and some types of agencies are being consolidated.