Newsday.com - Spy Leak May Violate Patriot Act:The article is by Sam Dash, who was chief counsel of the Senate Watergate Committee in 1973-74.
"Section 802 of the act defines, in part, domestic terrorism as 'acts dangerous to human life that are a violation of the criminal laws of the United States or of any state' that 'appear to be intended to intimidate or coerce a civilian population.'Clearly, disclosing the identity of a CIA undercover agent is an act dangerous to life - the lives of the agent and her contacts abroad whom terrorists groups can now trace - and a violation of the criminal laws of the United States."
Not that this is ever going to happen under Lord Protector Ashcroft, but it's an interesting idea. The whole article is worth a read.