From Wikipedia: The United States Intelligence Community

Created by an executive order by Ronald Reagan.

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The United States Intelligence Community (IC) is a group of separate United States government intelligence agencies and subordinate organizations, that work separately and together to conduct intelligence activities to support the foreign policy and national security of the United States. Member organizations of the IC include intelligence agencies, military intelligence, and civilian intelligence and analysis offices within federal executive departments. The IC is overseen by the Office of the Director of National Intelligence (ODNI), which itself is headed by the director of national intelligence (DNI), who reports to the president of the United States.

Among their varied responsibilities, the members of the community collect and produce foreign and domestic intelligence, contribute to military planning, and perform espionage. The IC was established by Executive Order 12333, signed on December 4, 1981, by U.S. president Ronald Reagan.

The Washington Post reported in 2010 that there were 1,271 government organizations and 1,931 private companies in 10,000 locations in the United States that were working on counterterrorism, homeland security, and intelligence, and that the intelligence community as a whole includes 854,000 people holding top-secret clearances. According to a 2008 study by the ODNI, private contractors make up 29% of the workforce in the U.S. intelligence community and account for 49% of their personnel budgets.