Homeland Security Investigations

Overview
Homeland Security Investigations (HSI) is a critical investigative arm of the Department of Homeland Security and is a vital U.S. asset in combating criminal organizations illegally exploiting America's travel, trade, financial and immigration systems.

HSI's workforce includes special agents, analysts, auditors and support staff. Its men and women are assigned to cities throughout the United States and to offices around the world. HSI's international force is the department's largest investigative presence abroad and gives HSI one of the largest international footprints in U.S. law enforcement.