All U.S. states except North Dakota require that citizens who wish to vote be registered. Traditionally, voters had to register at state offices to vote, but in the mid-1990s efforts were made by the federal government to make registering easier, in an attempt to increase turnout. The National Voter Registration Act of 1993 (the "Motor Voter" law) required state governments that receive certain types of federal funding to make the voter registration process easier by providing uniform registration services through drivers' license registration centers, disability centers, schools, libraries, and mail-in registration.