Authorized tent cities in Seattle provide housing to a few percent of the city's homeless.

But that's not enough.

Meanwhile, making it impossible for people once convicted of possession of drugs to have a place to live is an injustice, and self-defeating for society. If you wonder why 2/3 of prisoners released are back in prison within 3 years, perhaps it's because there's no room in society for an ex-con.

Behind all forms of homelessness in the US is the fact that there isn't enough housing in the US.