"More than 50 percent of all Internet traffic across the world passes through Virginia because AOL and 1,300 service providers or technology companies are located in northern Virginia, just outside of Washington." -- from an AP news story (2003-12-11) by Derrill Holly about the first arrests under an anti-spam law.
Bah humbug
On the other hand, spam really doesn't really hurt anybody compared to say, what the folx that ran Enron did (and what George Bush did ten years earlier on a smaller scale). Surely a solution can be found that doesn't involve the US justice system. For example, if statistics were kept on internet packets destined for port 25 on all the machines on the internet were kept and used to determine each ISP's line charges, I'm sure that ISPs would go after spammers with a vengance. This system can be maintained without involving end users (and without filling Bill Gates pockets to boot)