Trump’s warnings about voting by mail mix reasonable concerns with fanciful conspiracy theories

“Election fraud in the United States is very rare, but the most common type of such fraud in the United States involves absentee ballots,” Rick Hasen, an election law expert at the University of California, Irvine, law school, told the Times in April. “Sensible rules for handling of absentee ballots make sense, not only to minimize the risk of ballot tampering but to ensure that voters cast valid ballots.”