So, I don’t know the date means that much, but what stood out to me is that SCOTUS chose to hold conference on all of them the same day, even though the cases were docketed at different times.
Here are 2 of the cases, I don’t have a link to the 3rd in PA:
https://www.supremecourt.gov/search.aspx?filename=/docket/docketfiles/html/public/20-799.html
Michigan https://www.supremecourt.gov/search.aspx?filename=/docket/docketfiles/html/public/20-815.html
Some info on conferences:
Conference Days: The Justices meet in a private conference to discuss cases argued earlier that week. The Justices also discuss and vote on petitions for review. https://www.supremecourt.gov/legendkeyinfo.aspx
In order for the case to be heard, four justices must agree to hear the case. https://www.freeadvice.com/legal/how-does-the-supreme-court-decide-to-hear-a-case/
I have a bad feeling they’re putting them all together so they can just whisk them all away with one wave of their hands.
Sometimes Federal En Blanc hearing includes full court on same subject
A simple organizational method used to save time by eliminating repetition of evidence for multiple cases of the same topic.