Encyclopedia · Organization
Homeland Security Investigations (HSI)
U.S. federal criminal-investigations division within Immigration and Customs Enforcement
Organization details
- Parent agency
- U.S. Immigration and Customs Enforcement (ICE)
- Department
- U.S. Department of Homeland Security
- Core mandate
- Transnational criminal investigations
Homeland Security Investigations (HSI) is a federal law-enforcement component of U.S. Immigration and Customs Enforcement.
Responsibilities
Homeland Security Investigations (HSI) is the criminal-investigation arm of U.S. Immigration and Customs Enforcement. Its investigations cover cross-border crimes, financial schemes, human exploitation and other matters within DHS authority.
Election-related investigations
In September 2026 ABC News reported that DHS was expanding inquiries into alleged voter fraud using HSI agents, with assistance from U.S. Citizenship and Immigration Services investigators. The report establishes an announced or reported inquiry, not a finding that particular voters violated the law.
References
Research compiled through November 12, 2026. Sources and historical roles are dated where known.