Every day there are dozens of homeless people on the streets of Dublin, for whatever reason.
Have a look at the Resource Center for the Homeless in Austin, Texas, just to see what can be done if there’s the will.
Austin seems to be the place to go, and if ever the US lifts its iris scans and fingerprinting requirement for visitors, then I’d love to spend some time there.

American Institute of Architects : Austin Resource Center for the Homeless