Inflation
Inflation is taking a toll on low income households, and rent is the biggest culprit. While the Federal Reserve tinkers with interest rates to get it under control, that doesn't help those whose rent doubled after the bank bailouts of 2008-9 put $2 trillion in the hands of venture capitalists to speculate on real estate.
The U.S. Government thus exacerbated homelessness, which, a decade later, has become a national crisis.