comey to drop the investigation. >> let's bring in julian zelizer. can we add legal scholar to your resume this morning? legal scholars do -- they are split on this issue, whether or not the president can obstruct justice. but is that a wise strategy for the president of the united states? >> well, it's a very powell strategy, especially for his supporters to say the president simply can't be guilty of what he is being accused of doing. then takes away the argument what happened, what are the facts. and it tries to wipe it away. i don't think it will be sufficient. i think many legal skal lares will say that's not the case. there's a lot of evidence a president can come into fire for that. certainly when it comes to impeachment, which is a political prospect. >> part has been to attack the fbi in particular very strongly. and we did hear from christopher