ICE was created in 2003 through a merger of the investigative and interior enforcement elements of the former U.S. Customs Service and the Immigration and Naturalization Service. ICE now has more than 20,000 law enforcement and support personnel in more than 400 offices in the United States and around the world.
The agency has an annual budget of approximately $6 billion, primarily devoted to three operational directorates — Homeland Security Investigations (HSI), Enforcement and Removal Operations (ERO) and Office of the Principal Legal Advisor (OPLA). A fourth directorate – Management and Administration (M&A) – supports the three operational branches to advance the ICE mission.
ICE executes its mission through the enforcement of more than 400 federal statutes, and focuses on smart immigration enforcement, preventing terrorism and combating the illegal movement of people and trade.