The United States Secret Service (USSS) is a federal law enforcement agency under the U.S. Department of Homeland Security. Until 2003, the Service was part of the U.S. Department of the Treasury. About the book: https://www.amazon.com/gp/product/0786716177/ref=as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=0786716177&linkCode=as2&tag=tra0c7-20&linkId=93201a2cc21489d4a211862cedcf0ba7
The U.S. Secret Service has two distinct areas of responsibility:
Financial Crimes, covering missions such as prevention and investigation of counterfeit U.S. currency, U.S. treasury securities, and investigation of major fraud.
Protection, which entails ensuring the safety of current and former national leaders and their families, such as the President, past Presidents, Vice Presidents, presidential candidates, visiting heads of state, and foreign embassies.
The Secret Service's initial responsibility was to investigate counterfeiting of U.S. currency, which was rampant following the U.S. Civil War. The agency then evolved into the United States' first domestic intelligence and counterintelligence agency. Many of the agency's missions were later taken over by subsequent agencies such as the Federal Bureau of Investigation (FBI), Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF), and Internal Revenue Service (IRS).
Philip H. Melanson (1944 – September 18, 2006) was a Chancellor Professor of Policy Studies at University of Massachusetts Dartmouth.
He served as coordinator of the Robert F. Kennedy Assassination Archive, which is the world's largest collection on the subject, and also served as chair of the Political Science Department for 12 years.
An internationally recognized expert on political violence and governmental secrecy, Melanson wrote numerous books and articles related to these subjects. He appeared on NPR, BBC, CBS, and CNN news programs.
He made 95 Freedom of Information Act (FOIA) requests, which resulted in the release of over 200,000 pages of federal government documents on topics relevant to his research.
Knowledge, Politics, and Public Policy (ed.) (Cambridge, Mass.: Winthrop Publishers Inc., 1973).
Political Science and Political Knowledge (Washington, D.C.: Public Affairs Press, 1975).
The Politics of Protection: The U.S. Secret Service in The Terrorist Age, (New York: Praeger Publishers, 1984).
The MURKIN Conspiracy: An Inquiry into the Assassination of Dr. Martin Luther King, Jr. (New York: Praeger Publishers, 1988).(ISBN 0-275-93029-7)
Spy Saga: Lee Harvey Oswald and U.S. Intelligence (New York: Prager, 1990) (ISBN 0-275-93571-X).
The Robert F. Kennedy Assassination: New Revelations on the Conspiracy and Coverup, 1968–1991 (New York: Shapolsky Publishers, 1991). Paperback edition, 1994.
The Assassination of Martin Luther King, Jr. (New York: SPI Books, 1991). Paperback edition, 1994.
Who Killed Martin Luther King? (Berkeley, Cal.: Odonian Press, 1991).
Who Killed Robert Kennedy? (Berkeley, Cal Odonian Press, 1991).
Shadow Play: The Killing of Robert Kennedy, The Trial of Sirhan Sirhan, and the Failure of American Justice. with William Klaber, (New York: St. Martin's Press, 1997). Paperback edition, 1998. (ISBN 0-312-15398-8)
Secrecy Wars: Privacy, National Security and the Public’s Right to Know (Dulles, Virginia: Brassey’s Inc., January 2002). (ISBN 1-57488-324-0)
The Secret Service: The Hidden History of an Enigmatic Agency with Peter Stevens, (New York): Carroll and Graff, 2002) (ISBN 0-7867-1617-7).