Gun shop sells to Joe Bob.
I get in touch with Joe Bob and ask what he did with the gun. He says he traded it in at Gunz Shack.
I go to Gunz Shack, they show they sold it to Timmy.
I go to Timmy...
Etc. etc. It's more often then not a dry well, but it does sometimes come in handy. In something like this shooting, not so much. But the more mundane 4 mopes in a car, a gun in the center console, everybody playing "ain't my gun...I got felonies" then you find Mope B's girlfriend was the purchaser.
I actually don't think they do have voting history. You show ID, but your ballot isn't tied to an ID. Military service and SSN is searchable, I believe.
And yes, I'd have no problem with this. Especially if it keeps a few dead guys and illegals from voting.
Regarding Voting (pulling this from memory):
Knowing someone who ran for elected office a number of years ago gave some insight about the rolls and voting records. The voting rolls show which party you are currently registered for. Candidates use these party affiliations during campaigns to solicit support from voters from their party. At one time in Indiana, if you asked for a different party in a primary than your current affiliation it would automatically flip your party affiliation until you asked for another party in another primary. Did that a long time ago and suddenly started receiving stuff in the mail for the other party until I asked for the original party in the next primary. I don't know if it still works that way or not. There is, by law, no connection to a ballot to determine who you voted for. If they kept what you signed when you voted, all they can tell is whether you voted in that election. If it was a primary it will show which party's ballot you requested.
John