compulsory congressional proce process, no matter how many times the executive branch has asserted as much over the years, even if the president expressly directs such officials' noncompliance. she said essentially over 250 years of recorded american history, we've established that presidents are not kings. so what was remarkable about this ruling, she not only answered the question about whether don mcgahn should show up to respond to this subpoena from the house but also other national security officials and even the president himself. >> and of course you point out correctly that don mcgahn no longer works for the white house or the administration. this is somebody who is now a former official. what does this now mean, evan, for other officials who you know have refused to testify? i'm talking about john bolton or mick mulvaney or other officers, officials like charles kupperman? what about them? >> well, you know, it's not clear right now because obviously this is a ruling that the justice department is going to appeal.