His passport was revoked while he was in Hong Kong. Somehow he was allowed to board the flight to Moscow with a revoked passport, but not the flight from Moscow.
But a non-hacked vote tabulating machine will still do the job better than non-hacked humans.
Add a high enough percentage of random hand audits of the machine but counts to ensure they're functioning correctly, and you should get a reasonably high confidence that you have the most accurate count.
Perhaps because counting tens of thousands of near-identical pieces of paper is exactly the sort of repetitive, robotic task we've entrusted machines to perform more accurately than humans since at least the 1940s.