“ By virtue of the authority vested in me by section 301 of title 3 of the United States Code, and as President of the United States, it is ordered that the authority vested in the President by the last sentence of section 4 of the Airways Modernization Act of 1957 (71 Stat. 351) to provide for appropriate transfers of records, property, and personnel, in connection with transfers of functions made under other provisions of the said section 4, be, and it is hereby, delegated to the Director of the Bureau of the Budget. ”