Lots of states have been using mail-in ballots for years.
Never been an issue until now. Y'all did notice, the fraudsters got caught, right?
What makes you think its never been a problem?
OK, let me re-phrase that. People have never bitched about it until now.
You don't normally find most voter fraud until long after the election is over and the Democrats know it. I don't know much about the states that have been using mail in for years but what are their requirements for registering to vote? Do they have motor voter like in California? Do they have to show proof of citizenship, proof of residency and a valid picture ID to register like I did the last time I renewed my driver's license? How many many mail-in applications can they order by mail or pick up in person? In PA you can pick up as many mail-in voter applications you want to in person and when they get mailed in they only verify that the address is valid but not that the person is a legal voter.
These people know a lot about voter fraud:
https://truethevote.org/
