Letter to the Secretary of the Treasury About Secret Service Testimony Before Congressional Committees.
Dear Secretary Shultz:
I hereby direct that no officer or agent of the Secret Service shall give testimony to Congressional committees concerning matters observed or learned while performing protective functions for the President or in their duties at the White House.
This applies to the Senate Select Committee which is investigating matters relating to the Watergate break-in and the current efforts which I am informed are being made to subpoena present or former members of the White House detail of the Secret Service.
You will please communicate this information to the Director of the Secret Service promptly and either you or he should then personally notify the Chairman of the Senate Select Committee. You should further advise the Chairman that requests for information on procedures in the White House will be given prompt consideration when received by me.
[Honorable George P. Shultz, Secretary, Treasury Department, Washington, D.C.]
Note: The text of the letter, dated July 16, 1973, was released July 17.
Richard Nixon, Letter to the Secretary of the Treasury About Secret Service Testimony Before Congressional Committees. Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/255658