I read that the House of Reps is responsible for confirming the eligibility of the winner. To me that means no matter what the investigation yields, the House will say he’s eligible and the electors will go along with that.
If it gets to where the electoral votes are counted it is then in their hands. One Democrat and one Republican must state that they have reason to believe that there is a problem for the count to be in question. Then it would need to be resolved before a count is made.
This is reason to have the Supreme Court take action before that ever takes place.
I would hope that none of this gets that far otherwise there will be a major problem in this country. This will not go away!