Perhaps because Obama clearly isn't one? If anything, he is an "embarrassment" to authoritarian conservatives, much like most other American politicians.
What is a shame is that Obama started out as a moderate who wasn't nearly so authoritarian.
I know right? It's almost like he became extremely bitter that nobody was embracing his policies so he decided to go all dictatorial with everything. He's trying to compensate for his lack of true leadership ability by circumventing the law and seizing as much power as he can to push through his agenda.
And I really did have high hopes for him when he was elected.