There are some states where the best we've managed is being allowed to take "unpaid" time off to go vote, with the caveat that your employer cannot fire you for doing so. Some states don't even have that much. Guess which way those states tend to vote.
https://en.wikipedia.org/wiki/Federal_holidays_in_the_United...
So maybe blaming the other side is just politically convenient?
“Black voters, on average, wait 45 percent longer to vote than white voters; Latino voters wait 46 percent longer”
https://amp.theatlantic.com/amp/article/613408/
See also the particularly egregious Kentucky example where they even tried to close the station while people were still in line.
https://www.cbc.ca/news/world/us-primaries-kentucky-1.562334...
The examples of this kind of suppression are sadly countless here in the US.
https://www.npr.org/2020/06/09/873054620/long-lines-voting-m...
Mail-in ballots are so good that once you do them, you'll be dumbfounded at why this isn't the absolute standard country-wide. Like I can't describe how simple it is and nice to be able to research candidates on your own with the full ballot in front of you. Using phones and such is prohibited at in-person voting.
The other advantage is you aren't fully limited by the mail. There are drop-off bins at locations like public libraries.
We trust our mail to do nearly everything official with the government: your ID, vehicle registration, selective service number, passport, IRS PIN, jury summons, US census etc ALL come through the mail and ONLY through the mail, but for voting we don't??? why?!?