The Justice Department sued Delaware, Maryland, New Mexico, Rhode Island, Vermont, and Washington on Tuesday after they refused to turn in their voter registration rolls.

The complaints were filed in federal courts by the DOJ’s Civil Rights Division, which argued that the states violated federal laws, such as the National Voter Registration Act and the Help America Vote Act, which require states to have proper and effective voter registration and list maintenance programs, and the Civil Rights Act of 1960, which requires states to make their voter registration rolls available for inspection.