It's just that, you can't really prove if someone is tribal and depending on who hears the story and how compelling the testimony is you may or may not be forgeted.
If Tyrone Johnson wants your spare bedroom and you turn him down in favor of some petite 19 year old white girl, Tyrone can possibly sue you for discrimination under the fair housing laws for racism. You'd be obligated to prove that you aren't tribal in some way, and state why you picked the girl over him. Even though she's 19, she might have a credit card and therefore credit history that shines positive light, whereas Tyrone has had a foreclosure and frequently misses payments. The girl is simply more trustworthy than the guy.
The entire thing is a crock of stuff. If I don't want someone living in on my property they shouldn't.
Doubly Whammy:
You have to give people like a 14 day eviction notice before being able to throw them out once they have stayed in your residence for something like 2 months. I know this because my mom was filing for eviction on Andrew even though he didn't technically live there and bummed off her for free.