Small Government is a nice, and good, idea, but history shows us that neither surveillance apparatus (pl.) nor secret police (pl.) relinquish power, ever, within existing in the same continuum of legitimation (ie. state). There has been no previous instance where either were reduced; they only grow until chopped off entirely.
It's an infestation of the state. There is only one - proven - cure. (And I think it's naïve to assume that those who built and grow these structures are not aware of this)