What is ICE?
Quick Summary
ICE is a federal agency that enforces immigration law and investigates cross-border crime — but it doesn't patrol the border, that's a different agency (CBP). ICE mostly works inside the country, not at the border itself.
What does ICE actually do?
ICE has two main jobs, split across two branches. Homeland Security Investigations (HSI) investigates crimes like trafficking, smuggling, and fraud. Enforcement and Removal Operations (ERO) is responsible for finding, detaining, and removing people who don't have legal status to be in the country.
When was it created?
ICE was formed in 2003, when the government reorganized border and immigration functions into the new Department of Homeland Security after the September 11 attacks.
Does ICE patrol the border?
No. Border patrol duties belong to Customs and Border Protection (CBP) and the Coast Guard. ICE's work happens mostly in the interior of the country, not at ports of entry or the border line itself.
Can ICE agents enter my home without permission?
Generally, no. Most ICE arrest warrants are "administrative" warrants, signed by an ICE official rather than a judge. Unlike a judicial warrant, an administrative warrant doesn't authorize agents to force entry into a private home without the resident's consent.
How big is the agency?
ICE has roughly 20,000 employees across more than 400 offices in the U.S., plus offices in other countries. Its annual budget is around $8-9 billion.
Sourced from the Congressional Research Service, the R Street Institute, and ICE.gov. This is a general overview, not legal advice — if you need help with a specific immigration situation, see our Resources page for legal aid organizations.