I understand the reluctance on the part of Dems, for the reasons you point out.

I disagree that voter fraud is a non-issue, mainly because it gets brought out every time a Republican candidate loses. It is technically a vulnerability in the process, even if it isn't currently being exploited. Why not patch it? If nothing else it will stop those specific complaints. If we fix enough holes in the process then voters will start to feel more confident that results are legitimate. This is important if we don't want to descend further into political tribalism and violent conflict.

The mobile ID units sound like a great solution.