"The United States continues to face a serious challenge from the large scale smuggling of drugs from abroad that are distributed to every region of the Nation. In FY 2017, the Administration’s request includes $4.1 billion to support the efforts of Federal LEAs, the military, the intelligence community, and our international allies to support collaboration to interdict or disrupt shipments of illegal drugs, their precursors, and their illicit proceeds. The FY 2017 request represents a decrease of $341.4 million, (7.6 percent) below the FY 2016 enacted level. The major efforts are highlighted below.
"Customs and Border Protection ($2,400.4 million)
"Department of Homeland Security
"Customs and Border Protection (CBP) implements border enforcement strategies to interdict and disrupt the flow of narcotics and other contraband across our Nation’s borders. The comprehensive interdiction strategy includes the border security personnel at and between ports of entry (POE), detection and monitoring provided by aviation assets, and border security infrastructure and technology.
United States Coast Guard ($1,269.0 million)
"Department of Homeland Security
"One facet of the United States Coast Guard’s (Coast Guard) mission is maritime interdiction. The Coast Guard functions as the maritime counternarcotics presence in the source, transit, and arrival zones. Their maritime interdiction activities disrupt the flow of drugs into the United States.
"Federal Aviation Administration Interdiction Support ($12.6 million)
"Department of Transportation/Federal Aviation Administration
"Air traffic controllers staffing Air Route Traffic Control Centers monitor the Air Defense Identification Zones to detect possible suspicious aircraft movement. When suspicious movement is identified, the Federal Aviation Administration (FAA) notifies the DEA and Coast Guard of such activity. Upon confirmation of suspicious aircraft movement, FAA controllers support interdiction efforts by providing radar vectors to track the time of arrival, traffic advisory information, and last known positions to intercept aircrafts of interest.
"Department of Defense Drug Interdiction ($435.5 million)
"Department of Defense
"DoD’s counterdrug programs detect, monitor, and support the disruption of drug trafficking organizations. Additionally, DoD coordinates interagency resources and force requirements of air and surface assets in the Western Hemisphere Transit Zone."


FY 2017 Budget and Performance Summary - Companion to the National Drug Control Strategy, Executive Office of the President, Office of National Drug Control Policy, December 2016, p. 17.