I was thinking about getting a Protector for my license plate but have no idea if they are legal in my area. I've been on the NC DMV website but there is no mention of it anywhere. They set up alot of check points around here and always shine their flash light on the tag to see if it's up to date. I don't really want to call up the local police and ask. How can I find out if they are legal in my area and state? Thanks