Earlier quoted context omitted.
That's not the only form of vote fraud. Non-citizens voting is illegal and happens[1]. Does it happen in massive numbers? No idea, probably not. To what extent, though, does it compare to eligible voters who don't have ID, which is a common complaint about voter ID laws, which are struck down in the courts all the time. 1: https://www.justice.gov/file/3835pdf/download
Non-citizens voting is still in person voter fraud. I'm sure it has happened, but it is vanishingly rare, you citation is about 1 person. There is simply no incentive to commit that crime. Even less so if you're a non-citizen, because if you're caught you'll be deported. Very few people commit crimes where they have nothing to gain, a lot to lose, and a high chance of being caught. It is almost a non-issue. There is…
There is simply no incentive to commit that crime.
There is exactly the same incentive as that to suppress a vote for the other side.