Harry Truman actually said...

I believe that, in so far as possible, the office of the President should be filled by an elective officer.

Letter to the President of the Senate and to the Speaker of the House on Succession to the Presidency.

02/04/1947

More Harry Truman Quotes

I don't know anything about General Eisenhower's statement because I didn't see it.

Such regulations shall be uniform for all military departments insofar as practicable and shall be subject to the approval of the Secretary ...

Just let the river take its course.

It might.