I'm not lawyer, but if I recall correctly, that power derives from this: https://en.wikipedia.org/wiki/Police_power_%28United_States_constitutional_law%29 https

I'm not lawyer, but if I recall correctly, that power derives from this: https://en.wikipedia.org/wiki/Police_power_%28United_States_constitutional_law%29 https://en.wikipedia.org/wiki/Police_power_%28United_States_... Less clear to me if that applies to forcible quarantine, but seems like it would definitely apply to public events. On the point of large health risk, it doesn't seem unreasonable to me that every Warriors game is a perfect vector for community spread. I'm sure the health care professionals in the Bay Area would applaud this move.