We'll see when it grants a writ of certiorari on the first "Mail-in Voting" appeal based on a challenge to a state law allowing the unrestricted use of absentee ballots in the November 3rd. Presidential Election.
Apparently this was just done by the Texas Democratic Party:
https://thehill.com/regulation/503031-texas-democrats-ask-supreme-court-to-expand-mail-in-voting-access