Is this another flaw in our Constitution?

[Effete Snob]

9. Please acquaint yourself with the 25th Amendment

AMENDMENT XXV - Passed by Congress July 6, 1965. Ratified February 10, 1967.

Section 1.
In case of the removal of the President from office or of his death or resignation, the Vice President shall become President.

Section 2.
Whenever there is a vacancy in the office of the Vice President, the President shall nominate a Vice President who shall take office upon confirmation by a majority vote of both Houses of Congress.
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No they were not "just doing what they thought was proper". They were doing what the Constitution says to do.

Ford was appointed VP by Nixon when Agnew resigned, according to the 25th Amendment.

Ford became president when Nixon resigned, according to the 25th Amendment.

Ford then appointed Rockefeller to the vacant VP slot, according to the 25th Amendment.

That Amendment has, in my lifetime, gotten more of a workout than the 3rd one. But for whatever reason, people are well-prepared to object to soldiers being quartered in their living rooms.