I've read about colonias -- dirt-poor settlements along the U.S./Mexico border, mostly in Texas -- before. It's grinding poverty, of third-world proportions, among citizens of the U.S. Flood survivors in Texas, Florida, and Puerto Rico are in a bad way? In colonias, no access to clean water, power, or sewage disposal is permanent.
Click here for an article in The Washington Post by Parker Abt, entitled "There’s a third-world America that no one notices."