Bertfish
Throw bread on me
"Prohibited from firearms and voting" or similar language branded on felons' drivers' licenses would be just fine with me.
The ACLU would immediately jump on that as a reason for any slight, real or imagined, committed by an officer during any traffic stop. They'd claim that it instantly biased the response. Sure he could go back to the squad car computer and get the same info but I can see this being savagely attacked.