Moral based question:

[Daseal]

But I would really compare this more to radar detectors. I am pretty sure they are legal in Md, if I drive into Va, and still use mine, because I wasn't sure whether I could have one but not turn it on or have one I bought out of state, etc, then if I get caught, it's not a loophole, it's a ticket.

This is a terrible example. There are huge signs at the border that say: RADAR DETECTORS ARE ILLEGAL. That's clearly stated. There's no 'loophole' around that. Even if there werent the signs, there's a law, on the books, that says they're illegal. It's clearly recorded, and ignorance of a recorded rule is not reason to be able to break it.