IMO it the only option left if the asylum laws aren't changed. Build camps and incarcerate, process and deport. We would only have to do this a short time and world would get out.
No need to build camps.
We have numerous federal and state prisons which are completely empty after contracting out their services.
Many are brand new.
Just open them up and let them live there.
Be gracious and afford them the water, sewer and heating, perhaps elec power and natgas.