[piou]

The majority of the U.S. votes on paper: https://verifiedvoting.org/verifier/. Most of the rest of the country votes using Ballot Marking Devices that produce paper ballots; less than 5% of the population lives somewhere where the only or default choice is electronic voting.

[mmooss]

The issue is that the paper ballots are counted electronically. There may be a paper version for double-checking the vote, but it's rarely used. The vote relies almost entirely on electronic technology.

[firesteelrain]

There are many state-mandated post-election audits that involve random selection of ballots or precincts. There are state statutes and procedures that require a post-election audit of ballots after every election. These audits are designed to verify that voting equipment and tabulations operated correctly and that reported totals are accurate