how can they be convicted with a law that is passed after-the-fact?They can't, and that isn't what is being proposed, so why you are off on that tangent is beyond me.
You: They can't, and that isn't what is being proposed, so why you are off on that tangent is beyond me
I don't think it is a tangent. If you read the arguments of those who want to "seize now, ask questions later" they seem to think new laws being passed after the fact will put these people in the streets. It can't, and it shouldn't, or anyone could find themselves guilty of a law that didn't exist when they broke it.