| CBP | Customs and Border Protection |
| CIA | Central Intelligence Agency |
| CIO | Chief Information Officer |
| CLASS | Consular Lookout and Support System |
| DHS | Department of Homeland Security |
| DOJ | Department of Justice |
| EMA | Encounter Management Application |
| FBI | Federal Bureau of Investigation |
| FY | Fiscal Year |
| HSPD-6 | Homeland Security Presidential Directive-6 |
| IBIS | Interagency Border Inspection System |
| ICE | Immigration and Customs Enforcement |
| IT | Information Technology |
| MOU | Memorandum of Understanding |
| NCIC | National Crime Information Center |
| NCTC | National Counterterrorism Center |
| NDIU | Nominations and Data Integrity Unit |
| NTP | Nomination Tracking Processor |
| ODNI | Office of the Director of National Intelligence |
| OIG | Office of the Inspector General |
| TIDE | Terrorist Identities Datamart Environment |
| TREX | Terrorist Review and Examination Unit |
| TSA | Transportation Security Administration |
| TSC | Terrorist Screening Center |
| TSDB | Terrorist Screening Database |
| TSOU | Terrorist Screening Operations Unit |
| SOP | Standard Operating Procedure |
| VGTOF | Violent Gang and Terrorist Organization File |