Tennessee is also a one-plate-state. I removed my front plate in NJ one time and didn't go 10 miles before I got pulled over. o No:
Michigan is rear plate only. Anything you want on front as long as it's not obscene. Some I have seen might be classified as this though.
Plates Here in NYC you need both plates. When I got my cutlass calais I didnt have the right screws to put onto the front plate, So I left it on the dashboard. Big nono, ticket was $50 but it got reduced to $35 since it was my first car the judge said.