Williamson to Co-Operate?

CNN's chief political annalyst gloria borger joins us to talk about what we know so far. Ryan: Williamson, who initially talked about co operating, is now facing a criminal contempt charge because he's refusing to co operate. The committees still getting the information they're looking for, even if some in trump world are unwilling to talk to them. And next, doctor sanjea gupto with inside knowledge of efforts to develop an all-inclusive vaccine against coronovirus.