True. But then he might face execution. Too many people and political powers would feel threatened by him.
If it's truly THE Jesus from the bible, aka god himself in human form, then I don't think he has much to fear from any political power. Or whatever other power, for that matter.
The last time that he "died", it was his plan all along to die there and have it be symbolic of something. From context, it seems pretty obvious to me that the only reason he was "killed", is because he allowed it. Orchestrated it, even.
If we're going to bend over backwards and assume that
that Jesus walks the earth today, then well... then what he wants to happen is what will happen.
Now, if he does NOT have such powers - and thus would pretty much be indistinguishable from any other poor shmoe with a messiah complex... then I guess he'ld get the same treatment as such folks.
If he's harmless, he'll be put on meds at home.
If he could be a danger, including to himself, he'll indeed be committed to some kind of psychiatric clinic