In PA jury duty is done by drivers licenses, so if theyre driving then that's fairly likely. I was told they used to do them by voter registration, but they said most people dont vote. More likely the dead people weren't showing up when called to serve.
http://juror.monroepacourts.us/main.asp?id=faq#:~:text=How%20was%20my%20name%20selected,service%20because%20of%20my%20profession?
It appears both are.
Cops are not going to stop ice agents. They know cops dont do well in federal, pound-me-in-the-ass prison.