Immigration and Customs Enforcement

Immigration and Customs Enforcement is the federal agency responsible for investigating and enforcing violations of immigration and customs law inside the United States. It carries out deportations, detains people suspected of being in the country unlawfully, and pursues cross-border crimes such as smuggling and trafficking. Because its work touches workplaces, homes, and courts across the country, it is one of the most closely watched parts of the federal government.

What the agency does. ICE was created as part of a larger reorganization of federal agencies after the September 11 attacks, folding together immigration enforcement and customs investigations under one roof within the Department of Homeland Security. A broader look at its structure, budget, and mission is available in An Overview of U.S. Immigration and Customs Enforcement (ICE).

Authority and limits. ICE agents have real law enforcement power, but that power has boundaries set by the Constitution and federal law, including limits on where they can enter without a warrant and what they can compel a person to do. Understanding those boundaries matters for anyone who might encounter an agent, and is covered in What ICE Agents Can and Cannot Do.

Enforcement in practice. Much of the public debate around ICE centers on how enforcement actions unfold in workplaces and communities, including how raids are planned and executed. Inside ICE Raids: How Immigration Enforcement Works walks through that process. Enforcement also intersects with everyday systems like employment, where employers are required to confirm that workers are authorized to hold a job, a process explained in Guide to Employment Eligibility Verification.