That's why Cheney was looked into by the FBI. His interview with the FBI was contradictory to Libby's interview. In fact, he seemed unable to recall much of the information and conversations he clearly couldn't have forgotten because he was involved in the meetings Libby talked about. He is known for his incredible memory but somehow it all went south when Plame's name was brought up.
How do you think Armitage would have known Plame's identity? He was given it by someone who knew it and the only person to know it and identify who she was, was Cheney. He and Libby took the fall but it is known Cheney had to have been the source. All roads to that scandal lead directly to Cheney.
Please - get off the MSM bullshit. It's just stupid.