The "perception" of voter fraud in the US is itself entirely a fraud, created to allow rules that make voting harder.

Mechanisms like mandatory voting and greater access to polling places (and holidays on voting day) are exactly the opposite of what is desired by those talking about voter fraud. So while there is much talk of voter fraud, those options are always off the table.

Voter fraud just isn't a significant thing in the US. The perception of it won't be fixed by dealing with voter fraud, one way or the other.

Unfortunately, that means that the real problem is much harder. It's a combination of authoritarianism, partisanship, and xenophobia, deliberately exacerbated both within and without. We don't get to spend much effort on the genuine issues because we're too suspicious of each other, and spend all of our time fighting about non-issues.