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The United States Secret Service (USSS or Secret Service) is a federal law enforcement agency under the Department of Homeland Security charged with conducting criminal investigations and protecting U.S. political leaders, their families, and visiting heads of state or government.[3] Until 2003, the Secret Service was part of the Department of the Treasury, as the agency was founded in 1865 to combat the then-widespread counterfeiting of U.S. currency.
The Secret Service is mandated by Congress with two distinct and critical national security missions: protecting the nation's leaders and safeguarding the financial and critical infrastructure of the United States.
History
With a reported one third of the currency in circulation being counterfeit at the time,[14] Abraham Lincoln established a commission to make recommendations to remedy the problem. The Secret Service was later established on July 5, 1865 in Washington, D.C., to suppress counterfeit currency. Chief William P. Wood was sworn in by Secretary of the Treasury Hugh McCulloch. It was commissioned in Washington, D.C. as the "Secret Service Division" of the Department of the Treasury with the mission of suppressing counterfeiting. At the time, the only other federal law enforcement agencies were the United States Customs Service, the United States Park Police, the U.S. Post Office Department's Office of Instructions and Mail Depredations (now known as the United States Postal Inspection Service), and the United States Marshals Service. The Marshals did not have the manpower to investigate all crime under federal jurisdiction, so the Secret Service began investigating a wide range of crimes from murder to bank robbery to illegal gambling.
After the assassination of President William McKinley in 1901, Congress informally requested that the Secret Service provide presidential protection. A year later, the Secret Service assumed full-time responsibility for presidential protection. In 1902, William Craig became the first Secret Service agent to die while on duty, in a road accident while riding in the presidential carriage.[15]
The Secret Service was the first U.S. domestic intelligence and counterintelligence agency. Domestic intelligence collection and counterintelligence responsibilities were later vested in the Federal Bureau of Investigation (FBI) upon the FBI's creation in 1908.