North Carolina Gov. Patrick McCrory signed a bill for stricter voter requirements on Monday night—and the state was promptly sued by civil rights groups. The bill requires any voter to show identification, rolls back early voting, and ends one-stop registration during early voting. Although McCrory described the bill as a “safeguard” against voter fraud, there’s little evidence of this being a widespread problem in the state. North Carolina is one of 13 states to adopt voter registration laws since the 2010 election, with all but one of those states being controlled by Republican legislators. Civil rights groups have charged that the legislation will make it harder for minorities and the elderly to vote, as they are less likely to have photo ID—and are more likely to be Democrats.