Exactly what authority does Trump think he has saying Biden must prove his 80million votes were legal to take office? Where’s that written? ?

Trump is obviously mentally disabled. 

Yet Pencil Neck Schiff  stated that "hearsay" is proof. LOL

When has Trump ever cared if what he was saying is true?

Trump's trying to shift the burden of proof.

He stays in office or goes to jail.

https://ag.ny.gov/press-release/2020/attorney-gene...

https://lawandcrime.com/high-profile/federal-judge...

Did Trump say that under oath or was it something he tweeted?  Look, Expat, people can say all kinds of crazy sheet, and under the First Amendment, be protected from prosecution, if it's not something like shouting fire in a crowded building.  People lie, and only under a few circumstances is it ever a crime.  

Already accomplished.  All states have certified their vote totals and those totals have been audited.  Trump is waving his hands again.....worthless.