Immigration and Customs Enforcement’s (ICE) Homeland Security Investigations (HSI) is effectively contributing to the Federal Bureau of Investigation’s (FBI) Joint Terrorism Task Force (JTTF) counterterrorism efforts by leveraging its authorities, experience, skills, and staffing. Specifically, HSI's investigative expertise and ability to enforce its unique customs, criminal, and immigration law enforcement authorities successfully contribute to JTTF efforts.

However, existing agreements and guidance for HSI’s participation in the JTTF and its terrorism financing investigations are outdated. This occurred because Department of Homeland Security headquarters and HSI have not prioritized updating the documents. Up-to-date guidance would help establish a framework for agents to perform their assigned duties more effectively to support mission priorities.