Yeah, I can see there being difficulty. It's the type of thing that sounds good to a lot of people before they find themselves in a situation where it actually makes a difference. When it suddenly kicks in and people say, "wait, what?", I can see there being legal action or something. But I think it would also be too late, if it's already been accepted as law. It might prompt people to want to start undoing it, but there may be an instance of it applying first.