Not just Texas, from the whole country. Texas is just the second biggest state out there and lacks social programs, also I took a greyhound across the USA when I was a kid and saw it first hand.

Think about it: lots of people from LA aren’t from LA or even California, why would its unhoused population be any different? The same is true with Seattle, Portland and San Francisco. We have freedom of movement in the USA, anyone can just show up and live in a city without permission, it isn’t like the “EU” as you claimed. Free migration of people means that if any city or state decides to just give housing to all its unhoused population, unhoused in the rest of the country would quickly congregate on that place. No, we don’t have that in Seattle or LA yet, but the sucky social services in those places is way better than Great Falls MT or Houston TX. So people come.