as randy kay reported earlier, they seemed to be close on a professional but not a personal level. perspective from three harvard guys. ae lan jeff, you hear the president say the friendship between james comey and robert mueller is very bothersome. do you agree? >> i don't think it is bothersome. people in washington know each other. mueller is going to be responsible to make these decisions. comey is not the target of this investigation. he's a witness. i think it is working the reps. that's what the president is doing. he's entitled to do that. i don't think it really is going to have an impact on this. >> should the president be concerned about their relationship, if they're friends, if they talk? >> i think it is a favor to the president because when you're doing a prosecution that's a political prosecution, you have to be -- you can't give the other side an appearance of injustice.