All the President needs to do at this point is to show foreign interference in the elections. This is thanks to the last four years of the media bleating about foreign interference in the 2016 elections
At that point most state legislatures will consent to vote their own slate of electors-provided they hear from us all.
He doesn’t even have to prove WHO. There are plenty of statistical anomalies. If they can be proven to have originated offshore-BINGO -the state legislature will NOT certify the vote if they are AWARE their constituents know
The President needs to declare himself Caesar and refuse to step down.