Earlier quoted context omitted.
Virginia purged 1600 non-citizens from their voter rolls and a Chinese student actually voted in Michigan. Clearly requiring citizenship to register as a voter is not sufficient. Poll volunteers should be verifying citizenship.
One person voting who is not allowed is as bad (in terms of fidelity of the vote to legal voters' intentions) as one person being kept from voting who is allowed. There is copious evidence that these purges, and the atmosphere of fear they create, cause far more harm than they prevent.
This is where it gets confusing for me because your comment makes me think that people can’t agree on whether it’s a more serious mistake to allow an ineligible person to vote or whether we end up stopping (hopefully temporarily) an eligible voter from exercising their right.