[seanmcdirmid]

If San Francisco is handing out free homes to all who come, how would that not be a tragedy of the commons situation? “Everyone can come to SF to live by a humane standard” will never work.

So what regulations did you have in mind?

[makeitdouble]

Why does the regulations have to be limited to San Francisco ?

You can't have it both ways, with freedom of travel between states and no federal intervention ever into how social policies are applied.

[seanmcdirmid]

Ok, I totally agree with that. We will never be able to solve the “how can anyone who wants to live in SF do so humanely” problem but we have a shot of doing it in a region with limited immigration (or humane is applied to legal residents only), like Singapore or Finland.