U.S. Citizenship and Immigration Services (USCIS) handles applications and benefits.

Immigration and Customs Enforcement (ICE) enforces removal and detention.

Customs and Border Protection (CBP) manages border inspections and admissions.

Immigration law in the U.S. is enforced by three main agencies under the Department of Homeland Security: USCIS handles applications and benefits, ICE manages enforcement and removal, and CBP oversees border security and inspections