The voting rights act bars actions that dilute minority voting strength, but how the courts will interpret individual redistrict plans remains an open question.
It is those statehouses which will be acting on the 2010 census data to redistrict Congressional seats which means, to maximize their safe seats in Congress.
There is a concerted effort to redistrict the city, a concerted effort to keep thousands of people out, change the demographics of the city and hope people give up on a mass scale.