
Homeland Security Investigation (HSI)
Homeland Security Investigations (HSI) is a division of the U.S. Department of Homeland Security responsible for investigating various national security threats and criminal activities. Its work includes combating drug trafficking, human smuggling, identity theft, cybercrime, and immigration crimes. HSI conducts detailed investigations, gathers intelligence, and partners with other agencies to protect the country’s borders, financial systems, and critical infrastructure. Essentially, HSI plays a key role in identifying and dismantling criminal networks that threaten the security and safety of the United States.