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U.S. Park Police officers awaiting deployment during the 2005 Inauguration Day

Federal law enforcement in the United States

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U.S. Customs and Border Protection officers board a ship.

The federal government of the United States empowers a wide range of law enforcement agencies to maintain law and public order related to matters affecting the country as a whole.

Overview

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Federal law enforcement authorities have authority, given to them under various parts of the United States Code (U.S.C.). Federal law enforcement officers enforce various laws, generally at only the federal level. There are exceptions, with some agencies and officials enforcing state and tribal codes. Most are limited by the U.S. Code to investigating matters that are explicitly within the power of the federal government. Some federal investigative powers have become broader in practice, since the passage of the USA PATRIOT Act in October 2001.[1]

The Department of Justice was formerly the largest, and is still the most prominent, collection of Federal law enforcement agencies. It has handled most law enforcement duties at the federal level.[2] It includes the United States Marshals Service (USMS), the Federal Bureau of Investigation (FBI), the Drug Enforcement Administration (DEA), the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF), Federal Bureau of Prisons (BOP), and others. However, upon its creation in 2002; in response to the September 11, 2001 terrorist attacks; the Department of Homeland Security (DHS) became the Department with the most sworn armed Federal law enforcement officers and agents after it incorporated agencies seen as having roles in protecting the country against terrorism. This included large agencies such as The U.S. Coast Guard (USCG), the Transportation Security Administration (TSA), and the U.S. Customs and Border Protection (CBP)--which combined elements of the United States Border Patrol, United States Customs Service, and the United States Department of Agriculture's Animal Plant Health Inspection Service (APHIS) into a single agency within the DHS.[3]

While the majority of federal law enforcement employees work for the departments of Justice and Homeland Security, there are dozens of other federal law enforcement agencies under the other executive departments, as well as under the legislative and judicial branches of the federal government.

History

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Federal law enforcement in the United States is well over two hundred years old. For example, the Postal Inspection Service can trace its origins back to 1772.[4]

List of agencies and units of agencies

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Agencies in bold text are Law Enforcement Agencies (LEA) with arrest and firearm authority.

Executive Branch

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Seal Department Agency LEOs

Department of Agriculture (USDA) Office of the Inspector General (USDA OIG)
  • Investigative Division
 172
United States Forest Service (USFS)
  • Law Enforcement and Investigations (LE&I)
 550
Animal and Plant Health Inspection Service (APHIS)
  • Marketing and Regulatory Programs Business Services (MRPBS)
    • Investigative and Enforcement Services (IES)
    • Emergency Management, Safety, and Security Division (EMSSD)
  • Animal Care (AC)
  • Biotechnology Regulatory Services (BRS)
    • Regulatory Operations Programs
  • Veterinary Services
    • Science, Technology, and Analysis Services (STAS)
      • Center for Veterinary Biologics (CVB)
        • Inspection and Compliance (CVB-IC)
  • Plant Protection and Quarantine (PPQ)
Agricultural Marketing Service (AMS)
Food Safety and Inspection Service (FSIS)
  • Office of Investigation, Enforcement, and Audit (OIEA)
Farm Service Agency (FSA)
  • Farm Programs Division
    • Production, Emergency Services, and Compliance Division
  • Commodity Operations
    • Kansas City Commodity Office (KCCO)
      • Warehouse License and Examination Division (WLED)
Grain Inspection, Packers and Stockyards Administration (GIPSA)
  • Federal Grain Inspection Service (FGIS)
    • Quality Insurance and Compliance Division (QICD)
  • Packers and Stockyards Program
    • Atlanta Regional Office
      • Investigations and Enforcement
    • Denver Regional Office
      • Investigations and Enforcement
    • Des Moines Regional Office
      • Investigations and Enforcement
Risk Management Agency (RMA)
  • Compliance Office
Natural Resources Conservation Service
  • Deputy Chief for Strategic Planning and Accountability (SPA)
    • Compliance Division
Departmental Management (DM)
  • Office of Operations (OO)
    • Protective Operations Division (POD)
      • Security Operations Branch
Department of Commerce (DOC) Office of Inspector General (DOC OIG)
  • Office of Investigations
 20
Bureau of Industry and Security (BIS)
  • Export Enforcement
    • Office of Export Enforcement (EE)
    • Office of Enforcement Analysis (OEA)
    • Office of Antiboycott Compliance (OAC)
  • Export Administration
    • Office of Nonproliferation and Treaty Compliance (NPTC)
    • Office of National Security and Technology Transfer Controls (NSTTC)
 103
National Oceanic and Atmospheric Administration (NOAA) 176
National Institute of Standards and Technology (NIST)
  • Office of Facilities and Property Management (OFPM)
    • NIST Police Services Group
 28
United States Patent and Trademark Office (USPTO)
  • Office of Policy and International Affairs (OPIA)
    • Intellectual Property Policy, Protection and Enforcement Program (IP PP&E)
  • Office of the Chief Administrative Officer (OCAO)
    • Office of Administrative Services (OAS)
  • Office of General Counsel (OGC)
    • Office of Enrollment and Discipline (OED)
International Trade Administration (ITA)
  • Office of the Assistant Secretary for Enforcement and Compliance
    • Antidumping and Countervailing Duty Operations Unit
    • Policy and Negotiations
      • Trade Agreements Negotiation and Compliance
      • Subsidies Enforcement Office
Office of the Secretary of Commerce (OSEC)
  • Office of the Chief Financial Officer and Assistant Secretary for Administration (CFO/ASA)
    • Office of Security (OSY)
 37
Department of Defense (DOD) Office of the Inspector General (DOD OIG)
Special Inspector General for Afghanistan Reconstruction (SIGAR)
Defense Advanced Research Project Agency (DARPA)
  • Mission Services Office (MSO)
    • Security and Intelligence Directorate (SID)
Defense Contract Audit Agency (DCAA)
  • Office of the Inspector General (DCAA OIG)
Defense Contract Management Agency (DCMA)
  • DCMA Headquarters
    • Corporate Support
      • Office of Security
Defense Intelligence Agency (DIA)
  • Office of the Inspector General (DIA OIG)
Defense Logistics Agency (DLA)
  • Office of the Inspector General (DLA OIG)
  • DLA Installation Support
    • Office of Security and Emergency Services
      • Defense Logistics Agency Police
Defense Security Service (DSS)
  • Office of the Inspector General (DSS OIG)
  • Office of Security
National Geospatial-Intelligence Agency (NGA)
  • Office of the Inspector General (NGA OIG)
  • Security and Installations Directorate (SI)
    • NGA Police
National Reconnaissance Office (NRO)
  • Office of the Inspector General (NRO OIG)
  • Office of Security and Counterintelligence
National Security Agency (NSA) / Central Security Service (CSS)
  • Office of the Inspector General (NSA/CSS OIG)
  • NSA Police
Pentagon Force Protection Agency (PFPA)
Office of the Secretary of Defense (OSD)
Department of the Army (DA) Department of the Army Office of the Inspector General (DAIG)
United States Army Provost Marshal General
United States Army Intelligence and Security Command (INSCOM)
Department of the Army Civilian Police
United States Army Corps of Engineers (USACE)
  • Operational Protection Division (OPD)
Arlington National Cemetery
  • Arlington National Cemetery Security
Department of the Navy (DoN) Office of the Inspector General (USN OIG)
Master-at-Arms of the Navy (military police)
Naval Criminal Investigative Service (NCIS)
United States Marine Corps
Department of the Navy Police (civilian police)
Department of the Air Force (DAF) Office of the Inspector General (USAF OIG)
United States Air Force Office of Special Investigations (AFOSI)
Air Force Security Forces (military police)
Department of the Air Force Police (civilian police)
Department of Education Office of the Inspector General (ED OIG)
Office for Civil Rights (OCR)
Office of Federal Student Aid (FSA)
  • Office of Program Compliance
Office of Management (OM)
  • Office of Security, Facilities, and Logistics Services (SFLS)
    • Regional Security and Law Enforcement Division
    • Physical Security and Law Enforcement Division
Department of Energy (DOE) Office of the Inspector General (DOE OIG)
Office of Environment, Health, Safety, and Security (EHSS)
  • Office of Headquarters Security Operations
  • Office of Corporate Security Strategy, Analysis and Special Operations
Office of Enterprise Assessments (EA)
  • Office of Enforcement
    • Office of Worker Safety and Health Enforcement
    • Office of Nuclear Safety Enforcement
    • Office of Security Enforcement
  • Office of Cyber and Security Assessments
    • Office of Security Assessments
      • Composite Adversary Team (CAT)
National Nuclear Security Administration (NNSA)
  • Office of Secure Transportation (OST)
  • Office of Defense Nuclear Security
    • Naval Reactors Protective Force (NRPF)
Federal Energy Regulatory Commission (FERC)
  • Office of Enforcement (OE)
Oak Ridge National Laboratory (ORNL)
  • Facilities and Operations
    • Laboratory Protection Division
      • Safeguards and Security
Lawrence Livermore National Laboratory (LLNL)
  • Division of Security
Department of Health and Human Services (HHS) Office of the Inspector General (HHS OIG)
  • Office of Investigations (OI)
Food and Drug Administration (FDA)
  • Office of Global Regulatory Operations and Policy
    • Office of Regulatory Affairs
      • Office of Criminal Investigations (OCI)
      • Office of Operations
        • Office of Enforcement and Import Operations
        • Office of Food and Feed Operations
        • Office of Medical Products and Tobacco Operations
National Institutes of Health (NIH)
Centers for Disease Control and Prevention (CDC)
  • Office of the Director
    • Office of the Chief Operating Officer (OCOO)
      • Office of Safety, Security and Asset Management
Administration for Children and Families (ACF)
Office of the Secretary
  • Office of the Assistant Secretary for Administration (ASA)
    • Office of Security and Strategic Information
  • Office for Civil Rights (OCR)
    • Enforcement and Regional Operations Division
Department of Homeland Security (DHS) Office of Inspector General (DHS OIG)
Customs and Border Protection (CBP)
United States Coast Guard (USCG)
  • Intelligence and Criminal Investigations (CG-2)
  • Assistant Commandant for Prevention Policy (CG-5P)
    • Director of Inspections and Compliance (CG-5PC)
      • Office of Port and Facility Compliance (CG-FAC)
      • Office of Commercial Vessel Compliance (CG-CVC)
      • Office of Investigations and Casualty Analysis (CG-INV)
  • United States Coast Guard Police (CGPD)
Immigration and Customs Enforcement (ICE)
  • Enforcement and Removal Operations (ERO)
  • Homeland Security Investigations (HSI)
  • Office of Intelligence
  • Office of Professional Responsibility (OPR)
Office of Intelligence and Analysis (I&A)
United States Secret Service (USSS)
National Protection and Programs Directorate (NPPD)
Transportation Security Administration (TSA)
  • Office of Law Enforcement (OLE) / Federal Air Marshal Service (FAMS)
    • Visible Intermodal Prevention and Response (VIPR)
  • Office of Inspection
Federal Emergency Management Agency (FEMA)
Federal Law Enforcement Training Centers (FLETC)
Citizenship and Immigration Services (CIS)
  • Fraud Detection and National Security Directorate (FDNS)
Department of Housing and Urban Development (HUD) Office of Inspector General (HUD OIG)
Office of Administration
  • Office of Disaster Management and National Security
    • Protective Services Division (HUD PSD)
Office of Fair Housing and Equal Opportunity
  • Enforcement Activity
Departmental Enforcement Center (DEC)
  • Compliance Division
Department of the Interior (DOI) Office of Inspector General (DOI OIG)
Bureau of Indian Affairs
Bureau of Land Management (BLM)
  • Office of Law Enforcement and Security
United States Bureau of Reclamation (USBR)
Bureau of Safety and Environmental Enforcement (BSEE)
  • Safety Enforcement Division
  • Safety and Incident Investigations Division
  • Environmental Compliance Division
Bureau of Ocean Energy Management (BOEM)
  • Investigations and Review Unit (IRU)
National Park Service (NPS)
Office of Surface Mining Reclamation and Enforcement (OSMRE)
  • Division of Compliance Management
US Fish and Wildlife Service (FWS)
Indian Arts and Crafts Board (IACB)
National Indian Gaming Commission (NIGC)
Office of Policy, Management and Budget (PMB)
  • Office of Law Enforcement and Security (OLES)
  • Office of Natural Resources Revenue (ONRR)
    • Audit and Compliance Management
    • Coordination, Enforcement, Valuation, and Appeals
      • Office of Enforcement
    • Internal Review, Oversight and Compliance
Department of Justice (DOJ) Office of Inspector General (DOJ OIG)
Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF)
Drug Enforcement Administration (DEA)
Federal Bureau of Investigation (FBI)
Federal Bureau of Prisons (BOP)
United States Marshals Service (USMS)
Executive Office for US Attorneys and the Office of US Attorneys
Justice Management Division (JMD)
  • Security and Emergency Planning Staff (SEPS)
Office of Professional Responsibility (DOJ OPR)
Department of Labor (DOL) Office of Inspector General (DOL OIG)
  • Office of Labor Racketeering and Fraud Investigations
  • Office of Special Investigations
Occupational Safety and Health Administration (OSHA)
  • Directorate of Enforcement Programs (DEP)
  • Directorate of Whistleblower Protection Programs (DWPP)
Bureau of International Labor Affairs
  • Office of Trade and Labor Affairs (OTLA)
    • Monitoring and Enforcement of Trade Agreements (META)
Mine Safety and Health Administration (MSHA)
  • Coal Mine Safety and Health
  • Metal and Nonmetal Mine Safety and Health
  • Office of Assessments and Special Enforcement
Employee Benefits Security Administration (EBSA)
  • Office of Enforcement
Office of Labor-Management Standards (OLMS)
  • Criminal and Civil Enforcement
Office of Federal Contract Compliance Programs (OFCCP)
  • Division of Program Operations
    • Branch of Enforcement
Wage and Hour Division (WHD)
Office of the Assistant Secretary for Administration and Management (OASAM)
  • Security Center (SC)
    • Division of Protective Operations (DPO)
Department of State (DOS) Office of the Inspector General (State & BBG OIG)
Bureau of Diplomatic Security (DS)
Under Secretary of State for Arms Control and International Security Affairs
Under Secretary of State for Civilian Security, Democracy, and Human Rights
Department of Transportation (DOT) Office of Inspector General (DOT & NTSB OIG)
Office of the General Counsel
  • Office of Aviation Consumer Protection and Enforcement
Office of the Secretary of Transportation (OST)
  • Office of Intelligence, Security, and Emergency Response
    • Protective Service Division
  • Office of General Counsel (OCG)
    • Office of Aviation Enforcement and Proceedings
      • Aviation Consumer Protection Division
Federal Aviation Administration (FAA)
  • Office of Audit and Evaluation (AAE)
  • Office of Security and Hazardous Materials Safety (ASH)
  • Airports (ARP)
    • Office of Airport Compliance and Management
  • Aviation Safety (AVS)
    • Office of Accident Investigation and Prevention
    • Air Traffic Safety Oversight Service
National Highway Traffic Safety Administration (NHTSA)
  • Office of Odometer Fraud Investigation (OFI)
  • Office of Defects Investigation (ODI)
  • Office of Vehicle Safety Compliance (OVSC)
Federal Motor Carrier Safety Administration (FMCSA)
  • Office of Enforcement and Program Delivery
Federal Transit Administration (FTA)
  • Office of Transit Safety and Oversight
    • Office of System Safety
    • Office of Safety Review
    • Office of Program Oversight
Federal Railroad Administration (FRA)
  • Office of Railroad Safety
    • Office of Safety Assurance and Compliance
Pipeline and Hazardous Materials Safety Administration (PHMSA)
  • Office of Pipeline Safety (OPS)
    • Field Operations Division
  • Office of Hazardous Materials Safety (OHMS)
    • Field Operations Division
Surface Transportation Board (STB)
  • Office of Public Assistance, Governmental Affairs, and Compliance (OPAGAC)
United States Maritime Administration (MARAD)
Department of the Treasury Office of Inspector General
Treasury Inspector General for Tax Administration (TIGTA)
Special Inspector General for the Troubled Assets Relief Program (SIGTARP)
Bureau of Engraving and Printing (BEP)
Internal Revenue Service (IRS)
United States Mint
Alcohol and Tobacco Tax and Trade Bureau (TTB)
  • Office of Field Operations
    • Trade Investigations Division (TID)
Office of Terrorism and Financial Intelligence (TFI)
Department of Veterans Affairs (VA) Office of Inspector General (VA OIG)
Veterans Benefits Administration (VBA)
Office of Operations, Security, and Preparedness
Independent Agencies and Government Corporations
Appalachian Regional Commission (ARC) Office of Inspector General (ARC OIG)
Central Intelligence Agency (CIA) Office of Inspector General (CIA OIG)
Security Protective Service (SPS)
Commodity Futures Trading Commission (CFTC) Office of Inspector General (CFTC OIG)
Division of Enforcement
Consumer Financial Protection Bureau (CFPB) Supervision, Enforcement, and Fair Lending Division (SEFL)
  • Office of Enforcement
Consumer Product Safety Commission (CPSC) Office of Inspector General (CPSC OIG)
Office of Import Surveillance (EXIS)

Office of Compliance & Field Operations

Corporation for National and Community Service (CNCS) Office of the Inspector General (CNCS OIG)
Corporation for Public Broadcasting (CPB) Office of the Inspector General (CPB OIG)
Denali Commission Office of Inspector General (Denali Commission OIG)
Election Assistance Commission (EAC) Office of Inspector General (EAC OIG)
Environmental Protection Agency (EPA) Office of the Inspector General (EPA & CSB OIG)
Office of Enforcement and Compliance Assurance (OECA)
  • Office of Criminal Enforcement, Forensics and Training (OCEFT)
Office of Administration and Resources Management (OARM)
  • Office of Administration (OA)
    • Security Management Division
Equal Employment Opportunity Commission (EEOC) Office of the Inspector General (EEOC OIG)
Office of Field Operations
Farm Credit Administration (FCA) Office of the Inspector General (FCA OIG)
Federal Communications Commission (FCC) Office of the Inspector General (FCA OIG)
Enforcement Bureau (EB)
Federal Deposit Insurance Corporation (FDIC) Office of the Inspector General (FDIC OIG)
Division of Administration
  • Corporate Services Branch
    • Security and Emergency Preparedness Section
    • Security Operations Unit
Division of Depositor and Consumer Protection
  • Compliance & CRA Examinations and Enforcement
  • Consumer Protection and Community Affairs
Federal Election Commission (FEC) Office of the Inspector General (FEC OIG)
Office of the General Counsel (OGC)
  • Enforcement Division
Federal Housing Finance Agency (FHFA) Office of the Inspector General (FFHA OIG)
Federal Labor Relations Authority (FLRA) Office of the Inspector General (FLRA OIG)
Federal Maritime Commission (FMC) Office of the Inspector General (FLRA OIG)
Bureau of Enforcement (BOE)
Federal Reserve System Office of Inspector General (FRB & CFPB OIG)
Federal Reserve Police
  • Chairman's Protection Unit
  • Reserve Banks Security
  • Security Unit
Federal Trade Commission (FTC) Office of Inspector General (FTC OIG)
Bureau of Competition
Bureau of Consumer Protection (BCP)
General Services Administration (GSA) Office of Inspector General (GSA OIG)
Legal Services Corporation (LSC) Office of the Inspector General (LSC OIG)
National Aeronautics and Space Administration (NASA) Office of the Inspector General (NASA OIG)
Mission Support Directorate
  • NASA Protective Services
National Archives and Records Administration (NARA) Office of the Inspector General (NARA OIG)
  • Archival Recovery Team
National Credit Union Administration (NCUA) Office of the Inspector General (NCUA OIG)
Office of Consumer Protection
Office of Continuity and Security Management
National Endowment for the Arts (NEA) Office of Inspector General (NEA OIG)
National Endowment for the Humanities (NEH) Office of Inspector General (NEH OIG)
National Gallery of Art (NGA) Office of Protection Services
National Labor Relations Board (NLRB) Office of the Inspector General (NLRB OIG)
National Railroad Passenger Corporation (AMTARK) Office of the Inspector General (AMTRAK OIG)
Amtrak Police
National Science Foundation (NSF) Office of the Inspector General (NSF OIG)
United States Antarctic Program (USAP)
Nuclear Regulatory Commission (NRC) Office of the Inspector General (NRC OIG)
Office of Investigations (OI)
Office of Enforcement (OE)
Office of Nuclear Security and Incident Response (NSIR)
  • Division of Security Operations
Office of the Director of National Intelligence (DNI) Office of the Inspector General of the Intelligence Community (IG IC)
Office of Personnel Management (OPM) Office of the Inspector General (OPM OIG)
National Background Investigations Bureau (NBIB)
Facilities, Security, and Emergency Management
Office of Special Counsel (OSC)
Peace Corps Office of Inspector General (Peace Corps OIG)
Pension Benefit Guaranty Corporation (PBGC) Office of Inspector General (PBGC OIG)
Postal Regulatory Commission (PRC) Office of the Inspector General (PRC OIG)
Railroad Retirement Board (RRB) Office of the Inspector General (RRB OIG)
Securities and Exchange Commission (SEC) Office of Inspector General (SEC OIG)
Enforcement Divison
Office of Compliance Inspections and Examinations (OCIE)
Small Business Administration (SBA) Office of the Inspector General (SBA OIG)
Smithsonian Institution (SI) Office of the Inspector General (SI OIG)
Office of Protective Services
National Zoological Park
Social Security Administration (SSA) Office of the Inspector General (SBA OIG)
Office of the Deputy Commissioner, Budget, Finance, Quality, and Management (ODCBFQM)
  • Office of Security and Emergency Preparedness (OSEP)
  • Office of Anti-Fraud Programs (OAFP)
Tennessee Valley Authority (TVA) Office of the Inspector General (TVA OIG)
Tennessee Valley Authority Police
United States Agency for International Development (USAID) Office of the Inspector General (TVA OIG)
Office of Security
United States International Trade Commission (USITC) Office of the Inspector General (USITC OIG)
Office of Operations
  • Office of Investigations
  • Office of Unfair Import Investigations
Office of Administrative Services
  • Office of Security and Support Services
United States Postal Service (USPS) Office of Inspector General (USITC OIG)
United States Postal Inspection Service (USPIS)
  • Postal Police

Legislative Branch

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Seal Department Agency LEOs
United States Congress United States Capitol Police (USCP)
  • Office of the Inspector General (USCP OIG)
  • Office of Professional Responsibility (USCP OPR)
Government Publishing Office (GPO)
  • Office of Inspector General (GPO OIG)
Senate Sergeant at Arms of the United States Senate
House of Representatives Sergeant at Arms of the United States House of Representatives
Office of Inspector General of the House
Office of Congressional Ethics (OCE)
Library of Congress (LOC) Office of the Inspector General (LOC OIG)
Architect of the Capitol (AOC) Office of the Inspector General (AOC OIG)
Government Accountability Office (GAO) Office of the Inspector General (GAO OIG)
Forensic Audits and Special Investigations Unit (FSI)
Office of Safety and Security (SAS)
Office of Compliance (OOC)

Judicial Branch

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Seal Department Agency LEOs
Supreme Court of the United States Marshal of the United States Supreme Court
Administrative Office of the United States Courts (AOUSC) Office of Probation and Pretrial Services

Statistics

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  • In 2004, federal agencies employed approximately 105,000 full-time personnel authorized to make arrests and carry firearms in the 50 states and the District of Columbia. Compared with 2002, employment of such personnel increased by 13%.
  • Nationwide, there were 36 federal officers per 100,000 residents. Outside the District of Columbia, which had 1,662 per 100,000, State ratios ranged from 90 per 100,000 in Arizona to 7 per 100,000 in Iowa.
  • As of 2004, about 3 in 4 federal law enforcement officers working outside the Armed Forces were employed within the Department of Homeland Security or the Department of Justice.
  • Federal officers' duties included criminal investigation (38%), police response and patrol (21%), corrections and detention (16%), inspections (16%), court operations (5%), and security and protection (4%).
  • Women accounted for 16% of federal officers in 2004, an increase from 14.8% in 2002.
  • A third (33.2%) of federal officers were members of a racial or ethnic minority in 2004. This included 17.7% who were Hispanic or Latino, and 11.4% who were black or African American. In 2002, racial or ethnic minorities officers comprised 32.4% of federal officers.
  • Twenty-seven federal offices of inspector general (IG) employed criminal investigators with arrest and firearm authority in 2004. Overall, these agencies employed 2,867 such officers in the 50 states and District of Columbia.[5]

See also

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References

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  1. ^ http://tamiu.libguides.com/content.php?pid=355722&sid=2953612
  2. ^ Langeluttig, Albert (1927). The Department of Justice of the United States. Johns Hopkins Press. pp. 9–14.
  3. ^ https://www.cbp.gov/about/history
  4. ^ "Chronology of U.S. Postal Inspection Service". Retrieved 2013-11-26.
  5. ^ bjs.ojp.usdoj.gov Federal Law Enforcement United States Bureau of Justice Statistics Publications & Products. Page last revised on 17 June 2010. Retrieved 2010-06-17.
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