Franklin Roosevelt actually said...
By virtue of the authority vested in me by Title I of the First War Powers Act, 1941, approved December 18, 1941, and other applicable statutes, and as Commander in Chief of the Army and Navy and as President of the United States, it is hereby ordered as follows.
Context
Executive Order 9096—Reorganization of the Navy Department and the Naval Service Affecting the Office of the Chief of Naval...
03/11/1942