The fact that it took a subpoena just to get Mr. Manafort to comply, suggests that he has something to hide. Even if there is nothing, it looks suspicious that he is so uncooperative. I work in mental health, and if we have a resident suspected of drug use, we do a drug screen. If that resident refuses, we treat it as a positive. I realize the law is not as cut and dry; however, the principle still counts. Not cooperating, especially for something so monumental, looks very suspicious. I hope that Mr. Burr and the senate intelligence committee will keep that in mind as they proceed. Mr. Manafort is still innocent until proven guilty, but he's not doing himself any favors. And neither is the executive branch, when they constantly have to call into question the sources of information regarding the possible collusion committed by it and key members of the campaign. Ms. Conway can use all the props she wants in interviews, but it doesn't change how suspicious those key members are acting.