Richard Nixon actually said...
In order to achieve this goal in the most expeditious manner, I am today instructing the Secretary of Defense, the Director of Central Intelligence, and the Assistant to the President for National Security Affairs to cooperate fully with you in collecting and declassifying the appropriate materials to the maximum extent consistent with the requirements of national security.
Context
Memorandums About Acceleration of Publication of 'Foreign Relations of the United States' Series.
03/07/1972