Court cases trying to show P2P networks as illegal, based on the availability of illegal copyrighted material, have already been heard. The court rulings all pretty much stated that the P2P networks themselves are not illegal as their is a great deal of legal material that can be obtained, thus giving P2P networks a legal footing.
In fact the current crop of law suits is arising as a direct result of the failure of the record industry to get P2P applications made illegal. Tactic A fails try tactic B. So they have two options... they can try and get a law passed that will likely be found unconstitutional as so many recent internet restricting laws have been. Next they could try and get a constitutional amendmant passed. The public outcry against anything like that would kill any attempt almost instantly. The Senate and Congress members do need to get reelected after all.
So as for P2P on Americas most wanted... I doubt it. Even so that would only solve a fraction of the problem. Look up server locations on your local P2P networks. I bet a large fraction of them are not even in the US. The other countries would have to be just as rabid about it as the US based recording industry is trying to make the US.
Quite simply I don't think it is going to work.
I think this Quote can sum up the position of the Current Record Industry quite well.
We will not go quietly into the night,
We will not vanish without a fight.
I would add the Last part... but I don't think it applies, because they won't survive or live on. Not as they are anyways.
And here is an interesting article that shows how internet downloads are very likely not at the heart of decreased music CD sales. But rather the industry itself is at fault with its bad business practices and attempts to control the industry and kill off the free internet competition, illegal or otherwise.
http://www.bricklin.com/recordsales.htm
Course those are just my opinions.