Each year, the Department of Homeland Security (DHS) undertakes immigration enforcement actions involving hundreds of thousands of foreign nationals. These actions include the apprehension or arrest, detention, return, and removal from the United States of foreign nationals who are removable under U.S. immigration law. Foreign nationals may be removable from the United States for violations including failure to abide by the terms and conditions of admission or engaging in crimes such as violent crimes, document and benefit fraud, terrorist activity, and drug smuggling. Primary responsibility for the enforcement of immigration law within DHS rests with U.S. Customs and Border Protection (CBP) and U.S. Immigration and Customs Enforcement (ICE). CBP is generally responsible for immigration enforcement at and between the ports of entry and ICE is generally responsible for interior enforcement.
This Office of Immigration Statistics (OIS) Annual Report presents information on foreign nationals found inadmissible, apprehended, arrested, detained, returned, and removed during 2011.