Each year, the Department of Homeland Security (DHS) undertakes immigration enforcement actions involving hundreds of thousands of foreign nationals. These actions include the arrest, detention, return, and removal from the United States of foreign nationals who are inadmissible to or removable from the United States 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 responsible for the inspection of all arriving persons and conveyances at ports of entry and the deterrence or apprehension of illegal immigrants between ports of entry. ICE is responsible for enforcing immigration laws throughout the United States. This Office of Immigration Statistics (OIS) Annual Report presents information on the apprehension, detention, return, and removal of foreign nationals during 2010.