>> abby, thanks for the reporting. susan hennessey, let me bring you back in to get a few beets with you on all of this. let me read you the quote from the president where he tells reuters yeah, i think a sit down with mueller could be a perjury trap. it's my word against comey's and he's best friends with mueller so mewl might say well i believe comey and if i'm telling the truth that makes me a liar, that's not good. i don't know that comey and mueller are best friends. that aside, comey does have contemporaneous memos that could hold weight in the eyes of mueller's team but if it would be comey's word versus the president's word on the obstruction issue, doesn't it have to do with whatteer witnesses say and who is corroborated by other witnesses? >> it goes to the basic question of what perjury is. perjury is not bob mueller saying i believe one person or the other. a perjury trap doesn't mean what