On Sunday, NewsHour Weekend examines voting regulations in North Carolina. The state has had some of the most progressive voting practices in the U.S. and one of the highest voter turnouts in the country. But in the wake of the Supreme Court's decision to overturn a key part of the Voting Rights Act, the Republican-led state legislature passed a law instituting voter ID and overturning many of the voting procedures civil rights leaders spent years trying win. Now, the law is being challenged in federal court, to weigh whether it disenfranchises minorities who have been fighting for their voting rights for decades. NewsHour's Jeff Greenfield reports.