mr. johnson? >> thank you, general whitaker, do you agree with the presidentt the russian investigation is a witch hunt? >> as i mentioned previously, congressman, i think it would be inappropriate for me to comment about an ongoing investigation. >> well, you've commented about the roger stone investigation, which is ongoing. did you not? >> congressman, just to be clear about this -- >> this comment, we heard you comment on the roger stone investigation. why would you comment on the roger stone investigation but you are reluctant to answer our questions about the mueller investigation? >> that's a good question, congressman. my comments about the roger stone investigation were merely to acknowledge that i was aware that cnn had appeared to receive or was -- >> but you don't know whether or not cnn reporters were camped out with no advanced knowledge or whether or not he was tipped off or not. >> congressman, that is true, but -- >> let me move on.