Harry Truman actually said...
By virtue of the authority vested in me by section 12 of the act of March 4, 1923, 42 Stat. 1509, as amended by the act of June 26, 1946, 60 Stat. 318, and as President of the United States, it is hereby ordered as follows:
Context
Executive Order 10057—Transferring to the American Battle Monuments Commission Functions Pertaining to Certain United States
05/13/1949