The 20th Amendment. It clearly subordinates electoral and public votes to the eligibility of the president elect.The rest of that paragraph is important also.
... or if the President elect shall have failed to qualify, then the Vice President elect shall act as President until a President shall have qualified; and the Congress may by law provide for the case wherein neither a President elect nor a Vice President elect shall have qualified, declaring who shall then act as President, or the manner in which one who is to act shall be selected, and such person shall act accordingly until a President or Vice President shall have qualified.If no president-elect qualifies then the vp-elect acts as president. If neither of them qualify then Congress and not the Supreme Court gets to resolve the situation.
But what about the petitioners? All these suits brought before the court?
Unless 0 produces a real copy of his BC, there will be doubt in millions of peoples' minds from now on. And no legal recourse?
It does not say who resolves the matter in the first case of the PE being the only one failing to qualify. But that is a different issue than the one we were originally discussing. As you say, “it is important... also”.