Non-citizens have been added to several states’ voter rolls largely through motor vehicle departments, sometimes even after they have explained that they are not U.S. citizens.
States have been discovering non-citizens on their voter rolls over the years, with many being added through the “motor voter” process at motor vehicle departments that began with the National Voter Registration Act of 1993 (NVRA). If non-citizens are seeking to become naturalized citizens, then being illegally registered to vote can prevent that from occurring.