Representative Nancy Mace of South Carolina on Saturday night posted on X: "My heart goes out to Ilhan Omar and Rashida Tlaib tonight. Sending them thoughts and prayers," which was posted with an image that showed the Ayatollah and the Fox News headline, "Iran's Supreme Leader Ali Khamenei Confirmed Dead."
Representative Tlaib is a Michigican Democrat and is the only Palestinian American woman to serve in Congress.
In response, Omar quoted Mace's post and responded that she was concerned the congresswoman was "drunk" and posting on social media despite "your staff's advice."
Mace and Omar have recently found themselves bitter foes following the assassination of conservative activist Charlie Kirk in September. The lawmakers entered into a war of words following his death, lobbing personal attacks. Mace claimed Omar had "mocked" Kirk for "speaking the truth," adding in a social media post that "there MUST be consequences for glorifying political violence."
Mace then launched a censure effort and tried to remove Omar from her committee assignments, which Omar said was over "comments I never said."
"Her [resolution] does not contain a single quote from me because she couldn't find any," Omar said at the time. "Unlike her, I have routinely condemned political violence, no matter the political ideology. This is all an attempt to push a false story so she can fundraise and boost her run for Governor."
The censure effort failed by a vote of 214-213 in the House, with four Republicans siding with Democrats against the effort.
The Omar-Mace feud resumed this weekend after the U.S-Israel strikes on Iran, which killed Khamenei. Omar criticized the strike, saying: "President Trump is unilaterally dragging this nation into an illegal and unjustified war with Iran without congressional authorization, without a clear objective, and without any imminent threat to the United States."
Omar accused the president of exercising "a reckless abuse of power" and drew on her personal experience as a Somalian refugee to talk of "the horrors of war," saying "bombs do not build peace or create stability."
Mace made her post late on Saturday, addressing Omar and Tlaib, both of whom have been vocally critical of the U.S.'s Middle East policies and Israel during its operations in Gaza.
In response, Omar wrote to Mace: "I hope you aren't drunk and took your staff's advice, Rashida and I don't know this man and feel confident he didn't care about us," referring to Khamenei.
"Please restrain from drinking too much as you have been warned from your staff and stay off social media when you are drunk," she added. "I pray in his holy month you find peace and respect for your self."
Earlier this month, a New York Magazine profile cited multiple former staffers who said Mace directed late-night liquor runs during her first term in Congress and drank alcohol and used marijuana "excessively." Mace responded on X: "The Fake News sure does like to lie."
Meanwhile, a spokesperson for Mace directed Newsweek to a follow-up response from the congresswoman on X, in which she wrote: "So tell me, what was it like being married to your brother?"
Omar has not yet responded to Mace's latest message.
The claim that Omar "married" her brother has persisted for years among conservative circles, and even Trump repeated it during a lengthy post on Truth Social in September, writing: "Wasn't she the one that married her brother in order to gain Citizenship??? What SCUM we have in our Country, telling us what to do, and how to do it."
However, numerous fact checks have proved the claim false, and Omar outright addressed and denied the accusation in 2016, calling the allegation "absolutely false and ridiculous" while addressing an apparent discrepancy that she was somehow married two men simultaneously.
Omar called this "a difficult part of my personal history that I did not consider relevant in the context of a political campaign" while running for Congress. Omar married Ahmed Hirsi, the father of their three children, in 2009, according to a marriage certificate from Hennepin County, according to MPR News.
She had previously tried to Ahmed Nur Said Elmi, but the couple split in 2008 and only finalized their divorce in 2011. The couple had applied for a marriage license in 2002 but had never "finalized the application."