To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Share Embed Share URL Video File Node URL Embed Code <iframe title="MRC TV video player" width="640" height="360" src="https://www.mrctv.org/embed/115760" allowfullscreen></iframe> Appearing on Morning Joe, Obama campaign adviser Robert Gibbs refuses to criticize an ad by an Obama-endorsed Super PAC holding Mitt Romney responsible for the cancer death of a woman.
