it says, 70% of all african-american voters used early voting compared to 52% of white voters. the brief argues north carolina has been so unfair, federal observers should be deployeden the coming months to ensure that midterm elections there are legitimate. and asked that the law be thrown out. the state attorney general admits the changes to the electoral system are not good. >> new election law changes signed by the governor and this general assembly are bad public policy for north carolina. we should be encouraging people to register and to vote. and we should make it easier for them instead of making it harder. >> joining me now two guests. welcome to you both. professor, walk us through what the justice department is frying to do here. and how they can still do it under what's left of the voting rights act?