Ok don't want to be a mood killer - I'm hoping a fellow pede can just explain this... The constitution says that once the states sign off on the election and Congress confirms it (on January 6th), the president is inaugurated on January 20th. There's no caveat or exception outlined in the constitution saying:

".....Unless rampant fraud is discovered, in which case we'll send in the rightful winner after inauguration."

So can a fellow pede please explain "objectively* and constitutionally what happens next after sufficient fraud is shown? I haven't seen any legal evidence that shows Trump can just waltz in with evidence of rampant fraud and become president again. Even if the entire thing was fraudulent, the states signed off and Congress confirmed the results, so what else can be done? The only viable path I can even think of is a constitutional amendment which would have to be ratified by 2/3rd of Congress, is that the plan?