Coming this fall, to TNT:
When magic returns to the world, this elite team of experts feels that it's really not their place to decide whether it's being used ethically or not--after all, if magic is being misused, then surely the reputation of the individual sorcerer will suffer and people will choose not to work with them in future. This alone provides sufficient safeguards on the bad behavior of others, without needing some sort of state apparatus providing surveillance and control over the lives of everyday citizens acting in good faith. That kind of apparatus eventually finds continuing ways to justify its own existence, turning every magic user either into a slave of the state or a rebel against it. Minimal regulation of magic is the best regulation, they say, and so they refuse to participate in the oppression of their fellows by committing theft in the guise of artifact "confiscation" or by depriving others of their civil liberties simply because those others devoted their lives to esoteric studies in expectation of a reasonable reward. After all, doesn't the exchange of time and effort deserve to be compensated with otherworldly power? Of course it does! So these experts...pretty much don't do anything. Ever. Because to do so would be against their deeply held philosophical beliefs regarding the social covenant between individuals.
The Libertarians. This fall, on TNT.