The only serious problems we can see from the 2020 election, aside from the normal voter suppression that has long been common in many states, was the deliberat

The only serious problems we can see from the 2020 election, aside from the normal voter suppression that has long been common in many states, was the deliberate hobbling of the USPS by a Trump appointee and donor that results in an untold number of ballots not being counted that would have been counted had the USPS been operating at it's normal efficiency.