I wouldn’t want to propose that at all.
I would vehemently oppose that, actually.
We can’t be incarcerating people because of their political beliefs - we know where that leads.
The left, however, would have no qualms about incarcerating as “insane” any who opposed them ideologically.
which is precisely why I suggested that we revisit our national policy on institutionalizing the dangerously unstable — with which you seemed to want to argue.