Isn’t that what Los Angeles is currently doing? Anyway solving problem of homeless that just got unlucky and ended up on the street is the easy part. You provide support which they will use it to get back on their feet.
The hard part is that they are not the only people that are homeless. The more difficult ones are addicts, who first need to be cleaned and not all of them wants to. And the most difficult ones are mentally ill. Those should be committed to a mental institution, unfortunately during Reagan they must agree for this to happen and they obviously won’t.