Current US law requires racial gerrymandering to ensure blacks are able to elect black congressmen. This bill does not obviate that requirement.
https://www.washingtonpost.com/news/wonk/wp/2016/06/09/how-a...
https://www.washingtonpost.com/news/wonk/wp/2016/06/09/how-a...
[0] http://www.motherjones.com/politics/2017/05/supreme-court-no...
Unsurprisingly their jurisprudence on this is a shitshow as they try to square this circle while pretending like it is some sort of neutral antidiscrimination provision while also attempting to secure a minimum threshold of black political power.