ICE, or Immigration and Customs Enforcement, is a federal agency in the United States under the Department of Homeland Security. It was established in 2003 to enforce immigration laws and investigate customs violations. ICE has two main divisions: Enforcement and Removal Operations (ERO), which focuses on deporting individuals who are in the country illegally, and Homeland Security Investigations (HSI), which investigates criminal activities like human trafficking and drug smuggling. ICE plays a significant role in national security by targeting threats related to terrorism and organized crime. The agency works closely with other law enforcement agencies, both domestically and internationally, to ensure the enforcement of laws related to immigration and customs.