Harry Truman actually said...
In order that the public may have access to the facts, I have determined that a memorandum from the Secretary of Defense to the Secretary of State, dated September 26, 1947, and its enclosure, which have heretofore been classified as top secret, Should be declassified.
Context
Further Statement by the President on the Decision To Withdraw U.S. Forces from Korea, 1947-1949.
11/01/1952