We know because many manhours of research has vetted this topic and the consensus is clear: there are very few cases of in person voting fraud in the United States.

Very few meaning about 250 cases over a 15 year period.

Millions upon millions of votes are cast during this timeframe.

Frankly, I expect more fraud to naturally exist, like you.

But it just isn't a problem in the US.

Voting by mail is a state level thing, not every state has the option to vote by mail.

Ideology aside, it is a solution looking for a problem.

Turnout is also much higher. A few dead ballots suck, but the higher turnout renders them moot.

There have been numerous studies proving that systemic (not andecdotal) voter fraud doesn’t exist.

https://www.brennancenter.org/analysis/debunking-voter-fraud...

And there have been public comments by GOP politicians saying they’re pushing voter ID laws explicitly to disenfranchise democratic voters.

https://mobile.nytimes.com/2016/09/17/us/some-republicans-ac...

Race and voting demographics show Democrats have an edge nationwide that will continue to grow over the next decade and on. Republicans know this and this is why they hit mid-terms so hard. General voting is down and it’s easier to win. Add suppression methods, including psychographic warfare and they know they have a shot to rig the system.

This why Trump won and why our Supreme Court is going to take away the rights of workers, minorities, women, and immigrants.