intelligence community or in the law enforcement community, who need to have clearances to do their jobs. and if the president is going to go after somebody who upsets the president, whether it's an intel analyst who brings information that the president doesn't want to hear, or a prosecutor pursuing a case that the president doesn't want to see pursued, and the president uses this authority to withdraw security clearances as a way to punish, that undermines one of the basic precepts of our democracy. >> doesn't he have the power right now to actually withdraw the clearances from the mueller team and they can't continue their investigation, it's a counterintel investigation? >> the folks on the mueller team need clearances to do their job. if the president were to withdraw those clearances, they would be out of business. it would be tantamount to firing mueller and his team. >> david cohen, thank you so much. coming up, power check.