They have to get into another area; who is building with them in mind? Chances are the area they move to will look a lot like the ghetto they are fleeing. Section 8 housing will only accomodate so many of them, and much of that is in similar areas.
There is a bill of some sort going before congress that will give HUD (Housing and Urban Development) the authority to approve/disapprove all mortgages. The intent is to intergrate all neighborhoods in the USA by race and income.
It does seem that they want a poor Black family living beside every middle-class White person.
Those who won't abide by this rulling will not have a mortgage approved.
This is (Apparently) the governments solution to White-flight.