We investigate whistleblowers and their sworn statements don't we. We can investigate how the election was handle, how ballots were lost or misplaced or delayed. We can investigate how allow mass mailed out ballots be returned and accepted without any verification of who sent it back and what effect that had. It doesn't require proof to investigate that is what the investigation is for to find proof. An investigation needs a reasonable suspicion, a probable cause and we have plenty of that. Then we need a court case from PA about judges and local officials changing rules of the election to get to the SCOTUS so it can issue a quite clear ruling that only the state legislatures can change the rules and dates concerning elections for federal offices and Presidential Electors. They said that in FL2000 but it seems it needs to be restated.