Where do you find evidence to support this belief? Miller went to jail to avoid testifying, and Cooper's testimony as recited in the indictment compares EXACTLY with his public testimony on the same subject.
Miller went to jail to protect testimony about something/someone else - she wasn't protecting Libby, the 2nd release from Libby was simply "window dressing" for her. The part of the deal she cut with Fitzgerald to limit the scope of her testimony, do you know what that was all about? Because I do not.
we've had this discussion before - you can't prove perjury unless you investigate it. Libby was indicted for it because his testimony was investigated. once the GJ became a perjury venue, and not an investigation into the leak of a CIA covert ops identity - everybody is fair game in my opinion. So when Russert testifies he knew nothing, I want to see Andrea Mitchell in there testifying as to what her CNBC interview was all about. When Cooper testifies, I want to see Mandy Grunwald investigated for whether she knew who Wilson's wife was based on her prior role with the Clinton adminsitration, given that we know Wilson was dropping her status to people in the green room at fox news among other places.