Cross-Border Tunnels and Border Tunnel Prevention: Fiscal Year 2015 Report to Congress [open pdf - 823KB]
"Illicit cross-border tunnels are a persistent threat that pose a serious national security risk by providing a means for smuggler to move drugs, weapons, currency people, and contraband illegal across the border. As of September 30, 2015, 183 illicit cross-border tunnels have been discovered in the United States since Fiscal Year 1990. This report to Congress described the integrated, proactive approach taken by the Department of Homeland Security (DHS) to counter illicit tunneling activity and provides an update on U.S. Customs and Border Protection's (CBP) progress in coordinating federal efforts. Currently, DHS Components, including CBP, U.S. Immigration and Customs Enforcement (ICE), DHS Science and Technology Directorate (S&T), DHS Office of Intelligence and Analysis, and the Department of Defense, are collaborating on the detection, investigation, characterization, and remediation of illicit cross-border tunnels. CBP has awarded approximately $8.67 million to remediate illicit cross-border tunnels since Fiscal Year 2007."