| ATF | Bureau of Alcohol, Tobacco, Firearms and Explosives |
| BOP | Federal Bureau of Prisons |
| COPS | Office of Community Oriented Policing Services |
| DEA | Drug Enforcement Administration |
| Department | U.S. Department of Justice |
| DHS | Department of Homeland Security |
| FBI | Federal Bureau of Investigation |
| FY | Fiscal year |
| HHS | Department of Health and Human Services |
| ICE | U.S. Immigration and Customs Enforcement |
| IG Act | Inspector General Act of 1978, as amended |
| INS | Immigration and Naturalization Service |
| IT | Information technology |
| NIJ | National Institute of Justice |
| OIG | Office of the Inspector General |
| OJP | Office of Justice Programs |
| OMB | Office of Management and Budget |
| OFDT | Office of the Federal Detention Trustee |
| OVC | Office for Victims of Crime |
| USAO | U.S. Attorney’s Office |
| USMS | U.S. Marshals Service |
