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FBI field divisions map

The Federal Bureau of Investigation (FBI) is the domestic intelligence and security service of the United States, which simultaneously serves as the nation's prime Federal law enforcement organization. Operating under the jurisdiction of the U.S. Department of Justice, FBI is concurrently a member of the U.S. Intelligence Community and reports to both the Attorney General and the Director of National Intelligence.<ref name="intel">{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> A leading U.S. counterterrorism, counterintelligence, and criminal investigative organization, FBI has jurisdiction over violations of more than 200 categories of Federal crimes.<ref name="quickfacts">{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>

Although many of FBI's functions are unique, its activities in support of national security are comparable to that of the British MI5 and the Russian FSB. Unlike the Central Intelligence Agency (CIA), which has no law enforcement authority and is focused on intelligence collection overseas, FBI is primarily a domestic agency, maintaining 56 field offices in major cities throughout the United States, and more than 400 resident agencies in lesser cities and areas across the nation. At an FBI field office, a senior-level FBI officer concurrently serves as the representative of the Director of National Intelligence (DNI).<ref>Statement Before the House Appropriations Committee, Subcommittee on Commerce, Justice, Science, and Related Agencies, Federal Bureau of Investigation, March 26, 2014</ref><ref>FBI gets a broader role in coordinating domestic intelligence activities, Washington Post, June 19, 2012</ref>

Despite its domestic focus, the FBI also maintains a significant international footprint, operating 60 Legal Attache (LEGAT) offices and 15 sub-offices in U.S. embassies and consulates across the globe. These overseas offices exist primarily for the purpose of coordination with foreign security services and do not usually conduct unilateral operations in the host countries.<ref>Overview of the Legal Attaché Program, Federal Bureau of Investigation, Retrieved: March 25, 2015</ref> It is of note that the FBI can and does at times carry out secret activities overseas,<ref>Spies Clash as FBI Joins CIA Overseas: Sources Talk of Communication Problem in Terrorism Role, Associated Press via NBC News, February 15, 2005</ref> just as the CIA has a limited domestic function; these activities generally require coordination across government agencies.

FBI was established in 1908 as the Bureau of Investigation (BOI). Its name was changed to the Federal Bureau of Investigation (FBI) in 1935. The FBI headquarters is the J. Edgar Hoover Building, located in Washington, D.C.


Federal Bureau of Investigation sections
Intro  Budget, mission and priorities  History  Legal authority  Infrastructure  Personnel  Weapons  Publications  Controversies  Media portrayal  Notable FBI personnel  See also  References  Further reading  External links  

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