Regarding the Libby trial: E. Thomas McClanahan has done his homework. Matt Nelson (7/12, Letters) has not. Plame referred to herself as "covert" during her sworn testimony. But when asked if she was protected under the law, she truthfully answered no. Legal analysts agree that if she is not covered under the law, no law was broken and there is no underlying crime to punish. During her testimony, Victoria Toensing, who helped write the law, said flatly, "She was not covert under the law."
If you study the timeline of this investigation, you learn that Libby was not the source of exposing Plame's name. Richard Armitage gossiped with both Robert Novak and Bob Woodward. Novak was the first journalist to use her name in a public venue. The people that Libby talked to either did not write an article using Plame's name or did so after the Novak article. So if you want to put somebody in jail for exposing Plame's name, the buck stops at Armitage, not Libby.