What is circulating
“In a prime-time election security speech, Trump said the government had "identified approximately 278,000 noncitizens who are registered to vote in federal elections."”
Claimed by Donald Trump · official statement
The facts
FactCheck.org found the figure unsupported: DHS has not published its methodology and experts say it is likely highly inaccurate. About 250,000 came from a four-state review DHS described as "may be as many as", and about 28,000 came from the SAVE tool across 68 million records, or about 0.04%, a tool that has previously flagged U.S. citizens. Neither Trump nor DHS said any of these people voted.