I think what you mean is that the rest of the world has domesticated and pacified its populous.

Things were so bad in the United States, why would everybody want to come here?

You're right, also the criminal justice system must be good by your logic too then. Pretty insipid answer don't you think?

I guess I really don’t need an opinion on the matter, since the rest of the world has already voted with their money and migration preference, no?

Don’t be so salty ;)

You're almost certainly trolling, but rest assured everybody does not want to go to the US, especially those from other prosperous nations. There are plenty of places just as bad as the US in terms of violence and public disenfranchisement, for whom America is a trade up.