I do research on racist and xenophobic speech. I am also an American citizen, and have voted from overseas since 1996 (first in the U.K., and now in Canada). This makes me especially well-placed to explain why Donald Trump’s Truth Social post about overseas voters in late September and Republican efforts to undermine those voters are factually wrong and politically dangerous. The current law giving Americans overseas the right to vote in federal elections is the Uniformed and Overseas Citizens Absentee Voting Act, which was signed into law by Ronald Reagan, a Republican president. The federal program to help American…