"Secure Communities is a comprehensive Department of Homeland Security (DHS) initiative to modernize the criminal alien enforcement process. It supports public safety by strengthening efforts to identify and remove the most dangerous criminal aliens from the United States. Congress appropriated $1.4 billion to U.S. Immigration and Customs Enforcement (ICE) for criminal alien enforcement efforts. Secure Communities is built on three pillars that address the frequent challenges associated with accurately identifying and successfully removing criminal aliens from the United States."
U.S. Immigration and Customs Enforcement: http://www.ice.gov/