Twitter slapped a fact check label on a pair of tweets by President Donald Trump on Tuesday in which he railed against mail-in voting amid the COVID-19 pandemic. "Mail boxes will be robbed, ballots will be forged & even illegally printed out & fraudulently signed," Trump said in one tweet. Experts who study the issue have found no evidence that voter fraud is a widespread problem in the United States.

A Twitter spokesperson told NBC News that the tweets "contain potentially misleading information about voting processes and have been labeled to provide additional context around mail-in ballots."