[NJ346]

*Long story alert*

ok, so on Saturday I was given a license plate cover(clear) that has a slight tint to it and decided to put it on. I got pulled over Sunday night for speeding, got away with a warning, and nothing said about a tinted license plate cover. So fast forward to today: I'm leaving school and got lazy at shifting and bring first gear out to about 3500 rpm(not travelling all that fast with 4.11s), and end up getting tailgated all the way to my house by a cop who was radioed by the crossing guard at my school about the way I left school. So i get home, cop waits at the edge of my driveway, and has a "friendly talk" with me. He points out that I have no license plate up front, and that I have an "unclear" plate in the back. To make a long story short, the license plate is still perfectly visible. What are the laws regarding license plate covers that don't cover up "garden state" or anything like that? The cop is a class II special and known to be a ball buster, so was he just busting my balls about the back plate or is it really illegal to have a cover over it?