The allegation came via a video posted by conservative comedian Terrence Williams, who falsely declared that Omar "partied on the anniversary of 9/11."
In his video, Williams weighed in on footage of Omar dancing in a crowd to the song "Truth Hurts" by Lizzo. But the tape of Omar dancing wasn’t filmed on Sept. 11.
It actually came from an event hosted two days later, on Sept. 13, by Omar and four other first-term congresswomen who are members of the Congressional Black Caucus.
The footage of Omar dancing was first posted to Twitter on the night of the event by Adam Green, co-founder of the Progressive Change Campaign Committee, a political action committee. "Can someone name something better than @IlhanMN dancing to @lizzo?" Green wrote. "Because I can’t think of anything."
Jeremy Slevin, communications director for Omar, shared a copy of a flyer advertising the event, which was billed as lasting two hours and titled "Breaking Concrete Ceilings."
"What in the world were you celebrating on the anniversary of 9/11?" Williams said in the video, which showed the recording of Omar, according to FactCheck.org. "You were seriously partying on the anniversary of 9/11? Turning up, while millions of Americans were at home mourning all the lives that were lost."
On Sept. 18, Trump retweeted Williams’ video and said Omar is "the new face of the Democratic Party" and "will win us the great state of Minnesota."
IIhan Omar, a member of AOC Plus 3, will win us the Great State of Minnesota. The new face of the Democrat Party! https://t.co/aQFEygSa4D— Donald J. Trump (@realDonaldTrump) September 18, 2019
Omar responded roughly two hours later.
"This is from a CBC event we hosted this weekend to celebrate black women in Congress," she wrote. "The president of the United States is continuing to spread lies that put my life at risk. What is Twitter doing to combat this misinformation?"
This is from a CBC event we hosted this weekend to celebrate black women in Congress.— Ilhan Omar (@IlhanMN) September 18, 2019
The President of the United States is continuing to spread lies that put my life at risk.
What is Twitter doing to combat this misinformation? https://t.co/XdkRVrU7mZ
Williams’ claim was quickly debunked by journalists and fact-checkers, and Omar tweeted a few more times about Trump spreading it. She also retweeted a petition from Green’s political action committee urging Twitter to suspend Trump’s account until he removes his tweet.
The video has since been removed from Williams’ Twitter and Facebook accounts. But Williams, who did not respond to a request for comment, doubled down on his criticisms of Omar, calling in a series of tweets for her to be impeached for labeling Trump a racist. (Members of Congress can be expelled by their respective chamber, but they cannot be impeached.)
For his part, Trump tweeted about Williams twice more the same morning he shared the attack on Omar. In August, he also retweeted a video in which Williams suggested without evidence that Bill and Hillary Clinton were behind the death of disgraced financier Jeffrey Epstein.
Trump has spread falsehoods related to Omar before, wrongly claiming in July that she was "speaking about how wonderful al-Qaeda is." Omar drew criticism from some quarters in March for saying "some people did something" in reference to the attacks on the World Trade Center.
The Trump campaign declined to comment.
For the record, Omar spent at least part of her night on Sept. 11 speaking alongside Reps. Alexandria Ocasio-Cortez, Rashida Tlaib and Ayanna Pressley at the Congressional Black Caucus Foundation conference, according to a video on her Facebook page.
Slevin said Omar did not attend the other receptions put on for the conference that evening, and he confirmed that she was not dancing at any other event held that day.
Trump retweeted a post that said Ilhan Omar "partied" on the anniversary of 9/11.
The bogus allegation, shared by a comedian with an assist from Trump, who broadcast it to his 64 million Twitter followers, was based on a video that shows Omar dancing at a Congressional Black Caucus event. But the event was hosted on Sept. 13, not on Sept. 11.
We rate this statement Pants on Fire!