[aaronem]

That'd be a great idea if psychiatry had any better idea of what moves people to commit crimes, and how to stop them doing it again, than anyone else does. And even then, it'd be a terrible idea. You're proposing psychiatry become, not just an arm of the state, but an arm of the criminal justice system, with all the baggage that implies. What in the history of the field gives you to imagine it's mature enough, with responsible enough practitioners, to be given that much potential for abuse both well-meaning and otherwise?