PA is a special case. They won’t be able to sort out good from bad ballots are far as ballot harvesting, etc, but they can disallow the votes received after 8 o’clock, which the law clearly requires, and those have been segregated.
Disallowing those will give Trump the win, without having to sort out that mess. It get a fair and correct result easily.
“Under Pennsylvania law, voters must return their own ballots. The only exceptions to this are for voters with a disability who have designated someone in writing to deliver their ballot.”
https://www.votespa.com/Voting-in-PA/Pages/Mail-and-Absentee-Ballot.aspx
Ballot harvesting is an exception, not the rule in PA.
Disallowing those will give Trump the win, without having to sort out that mess. It get a fair and correct result easily.
You are correct, this one should be an easy rule for the USSC. The courts are reluctant to overturn election results based on claims of fraud, such as dead people voting, miscounted ballots, etc. They should give weight to sanctioning such illegality, but for some reason they don't.
But they do seem to be open to ruling on matters of process. That's basically what happened in Bush v. Gore. The Gore campaign wanted to recount selectively and the Court said no, you can't change the rules in midstream simply because it will help your case. Likewise here. The law says the ballots must be in by a certain date and time. No ballot received after the cutoff date and time will be accepted and counted as valid. The USSC says you have to follow your own laws. Of all the challenges out there, this one seems pretty straightforward.
I don’t think that would be enough to change the outcome. They have to claim and adjudicate that the rules were different in different counties (like no dates, no signatures, etc.) and that the administration was fraudulent. Both the PASC and the administration changed the rules without authority.
Then the legislature has to appoint Trump electors and overrule the administration. Tall order but can and must be done.