> There are not non-citizens on voter rolls.

That is incorrect, there are actually non-citizens on voter rolls, especially in the states with automatic voter registration. Example: https://www.texasattorneygeneral.gov/news/releases/scotus-al...

Of course, actually voting would be a crime: https://www.law.cornell.edu/uscode/text/18/611 but it doesn't stop everybody: https://www.daytondailynews.com/news/state-more-than-100-non...