This all boils down to the question of how to reign in the administrative state, and the problem here is that no one really wants to reign it in, they want to control it and point it in the direction they prefer, that is, they want an extra-judicial, extra-legislative source of power to exist, but just not do any of the things they don't like.
But I don't think this is possible, once you have an administrative state, of course it's going to monitor and spy on everyone, it's going to arrest people and not give them fair trials (hello Assange), it's going to try to manipulate democratic processes and it's going to crush any force that it perceives as a threat to its own survival. In short, it will have a mind of its own, with its own goals, and by definition it will not be bound by legislative or judicial restraints.
But I don't think this is possible, once you have an administrative state, of course it's going to monitor and spy on everyone, it's going to arrest people and not give them fair trials (hello Assange), it's going to try to manipulate democratic processes and it's going to crush any force that it perceives as a threat to its own survival. In short, it will have a mind of its own, with its own goals, and by definition it will not be bound by legislative or judicial restraints.