[Technically]

> It is caused by people developing mental health issues that make retaining employment extremely difficult.

Sadly, there are many other reasons, too. I met a family of immigrants. I learned through their eight-year old son his parents lost their jobs, couldn't find legal employment, did not speak english. As they were at a shelter, I imagine they were decent candidates to be picked up by ICE.

Nonetheless, I agree with your post. This is a solvable problem but it is only solvable at the housing level.