Secret Service (USSS) [DHS]

Conducts criminal investigations and protects U.S. political leaders, their families, and visiting heads of state or government. Also responsible for safeguarding the payment and financial systems of the United States from a wide range of financial and cyber-based crimes including counterfeit U.S. currency, bank and financial institution fraud, mail fraud, wire fraud, illicit financing operations, and major conspiracies

Civilian Agency

Department of Homeland Security (DHS)

https://www.secretservice.gov/