Question

What are the two oldest law enforcement agencies in the United States?

Federal Bureau of Investigation and the Central Intelligence Agency
U.S. Marshals Service and the Postal Inspection Service
Immigration and Naturalization Service and the Department of Homeland Security
Secret Service and the U.S. Marshals Service

Answer 1

U.S. Marshals Service and the Postal Inspection Service

Answer 2

Secret Service and Marshals Service