Well, not to get too far off topic, but the Justice League has similar standing with its government(s) as S31. No authorization for its existence, no chain of command related to government authority, and no responsibility to the populace or the government. But they're "good guys" and S31 isn't? Is it the lack of government-backed legitimacy that is bad, or is it the actions taken that are bad?
Batman's a vigilante like Sloan. What's the real difference between them? Their actions.