dowd claimed he drafted that tweet and offered another defense that the president cannot obstruct justice because, as chief law enforcement officer, he has every right to express his view of any case. >> that claim drew protests by critics and a white house lawyer ty bob down playing it. cobb said et' interesting as a technical legal issue by the lawyers intend to praes a fact-based offense. it is worth noting that articles of impeachment against richard nixon and bill clinton did include obstruction charges. >> we've also learned another white house lawyer told president trump in january he believed flynn had misled the fbi as well as vice president pence in january. >> that raises questions about what the president knew when he urged then fbi director jim