So everyone calm down.  We don't need to prove anything on these boards.  Its up to the parties to argue.  The question is what needs to be proved and by whom for the election in part or in whole to be valid?  Mail in ballots need to have like protection to be considered valid.  If they do not, they can be tossed.  PA screwed up by not allowing observers.  That was mandated by PA law.  The SC question may center on just this...the PA legislature determines laws to be followed to validate votes.  If not validated in this manner, not valid.  This most likely will be ruled in Trumps favor at the SC.  All out scorched earth is necessary to reveal voting fraud issues in the future.