I guess 250 people can be gathered in forced quarantine in a commandeered hotel though
First they try to find free housing for derelicts living outside in San Francisco. Then if the derelicts self-diagnose as a coronovirus carrier and a sanctuary city illegal they get a $750 a night luxury hotel room. “Love the thick bathrobes.”
If no one can ask them if they are here legally then how can they ask if they really have the virus? No chance.