>> the one thing i can say, chris, is, you know, we in congress have to get to the bottom of this, because unfortunately, we can no longer trust that the u.s. attorneys who are operating under the supervision of william barr, the new attorney general, are actually going to turn over the findings of their investigations. just as mr. barr has intimated or hinted that he's not going to turn over the mueller report, which is completely unacceptable in my opinion, as well. >> all right. congressman raja krishnamoorthi, thank you very much. more now are harry litman and melissa murray, a professor of law at nyu. it's like the oldest cliche that comes out of watergate, it's not the crime, it's the cover-up. and ultimately, it was the clumsiness of the cover-up that nixon engaged in that did him in. and we have two possible pieces of evidence about a possible cover-up here. one is the lawyers making edits to that testimony. how significant that? >> i think it's when making edits, did the lawyers have