Homelessness has been a problem for decades. The camps are here because it was found to be unconstitutional to arrest and harass people for being homeless unless you have offered them other suitable accomodations.
We have cut services and increased housing prices all over the country for decades. This is all a direct result of lack of access to education, healthcare, and a horrible social safety net.
The transfer of wealth from the bottom and middle to the top.
The way the ruling reads to me is that we could arrest people if we offered enough housing for our local population.
So as I read it we could literally arrest migrant transients and send them back where they came from or just put them in jail once we solve our local problem.
Either way, it wouldn't be an enticing proposition to migrate here to be homeless.