Some on the Left actually ARE questioning the legitimacy of Brennan/obama using drones, especially to kill Americans. Here's the
Daily Kos, with questions they thought should have been asked during the hearing and their subsequent analysis of what happened during the hearing.
Many questions for John Brennan today and only a few hours to ask them
This is one area where the "true believers" in freedom do not disgaree on the left or right. Some of their comments during the hearing are not much different than any of us would make.