United States Secret Service

The United States Secret Service is a United States federal government law enforcement agency that is part of the United States Department of Homeland Security.
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Noun
1. the United States intelligence agency that protects current and former presidents and vice presidents and their immediate families and protects distinguished foreign visitors; detects and apprehends counterfeiters; suppresses forgery of government securities and documents
(synonym) US Secret Service, USSS, Secret Service, SS
(hypernym) United States intelligence agency
(part-holonym) Department of the Treasury, Treasury Department, Treasury, United States Treasury