n the 2024 election, nearly one in three Americans voted using mail-in or absentee ballots, accounting for some 48 million votes. And despite persistent rhetoric against it, even President Donald Trump votes by mail. Nevertheless, Trump further admonished mail voting while pushing the SAVE America Act, which could radically change how people vote ahead of the midterms. “Mail-in voting means mail-in cheating,” he said to press in Memphis, Tenn., Monday. “I call it mail-in cheating, and we got to do something about it all.”

Outside of the legislature, another body is doing something about mail ballots that may change how millions of Americans vote. The U.S. Supreme Court began oral arguments Monday on Watson v. RNC, a case determining if Mississippi allowing late mail-in ballots violates federal law establishing a specific election day. The largest question in this case is whether ballots need to be received by Election Day or just be cast by Election Day and allowed to be received later.