All web pages have to come from servers. There could be other ways devised to enforce it in the US.
Your point about foreign sites I did think about and don't have any good answers for regulating that, but there could be some ways to block them rather than subjecting the US to a set of international laws, some of which may not be in our best interest.
Despite filters and spam traps by my isp, the regular spammers, porn spammers, and scammers constitute the majority of mail in my inbox every single day. I guess it goes with the territory.
Hey, you jsut made me think about something. My porn spammer must have gotten shut down becasue I jsut thought about it and I have not been getting any spam e-mails lately offering to enlarge my penis. For years I was on the "make your penis bigger" spam list and jsut now I realized I haven't been geeting them lately. Thanks for your post. That is some good news for me!