


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. 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. political leaders, their families, and visiting heads of state or government.

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. Department of Homeland Security (2003–present)
