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Transnational Criminal Investigative Units

HSI’s Transnational Criminal Investigative Units (TCIUs) comprise trained foreign law enforcement officials who work closely alongside HSI to investigate and prosecute individuals involved in transnational criminal activity. These units facilitate information exchange and rapid bilateral investigation of many of the violations of law within HSI’s investigative purview. These violations include: weapons trafficking and counter-proliferation; money laundering and bulk cash smuggling; human smuggling and trafficking; narcotics smuggling; intellectual property rights violations; and other customs-related fraud, child exploitation and cyber-crime. The TCIU program was launched in September 2011 and has more than 600 vetted and trained foreign law enforcement officers in 15 locations across North, Central and South America, the Caribbean, the Middle East and Asia. In fiscal year 2022, TCIU efforts worldwide resulted in 3,800 criminal arrests and the seizure of nearly $18.6 million and more than 350,000 pounds of narcotics and precursor chemicals.

TCIUs enhance the host country’s ability to investigate and prosecute individuals involved in transnational criminal activity that threaten the stability and national security of the region and pose continuing threats to the United States. TCIUs identify targets, collect evidence, share intelligence and facilitate the prosecution of transnational criminal organizations through both the U.S. judicial system and in foreign countries.


International Operations

Develops & supports investigations, initiatives & operations conducted or supported by HSI attaché offices & builds relationships with foreign law enforcement partners