Thomas Massie (R-Ky.) used his time on the floor of the House Monday to deliver an antisemitic rant excoriating Israel for its 1967 attack on the USS Liberty.

This popular antisemitic theory alleges that Israel deliberately attacked an American ship during the Six-Day War, killing 34 U.S. service members and wounding 171 others.

Israel said it mistook the vessel for an enemy ship, took responsibility immediately following the incident, and paid millions in restitution to the families of the victims. The United States concluded that it was also a case of mistaken identity upon investigating the matter.

But Massie, who has blamed pro-Israel groups for his defeat in his state’s primary election, is wading deeper into the morass of anti-Jewish hatred.

“This was an effort to kill everybody on board,” Massie said. “There was no intention of taking prisoners after the 25 grueling minutes of attack on this virtually unarmed ship.”

“None of these distinguished men think this was an accident,” Massie said, referring to U.S. officials who dissented from the official account. “They think it was intentional murder by the country of Israel, either as a false flag operation or because they simply didn’t want anybody observing what they were doing that day.”

He called for another investigation, despite multiple probes by both governments reaching the same conclusion: It was a tragic accident.

Rep. Dan Crenshaw (R-Texas) said he believes that Massie has chosen to align with the anti-Israel crowd.

“I’ve always had respect for Massie. He was always — in my opinion — wrong about his approach but he was standing on heartfelt principles and had intellectual backing. He’s a nice guy,” Crenshaw wrote on X. “But comments like this make me question his authenticity. The USS Liberty incident is a tragic one, but it’s an incident with a clear conclusion if one uses any objective analysis of the facts.”

“I thought Massie was capable of objective analysis. Perhaps he still is,” Crenshaw continued. “Perhaps we are simply witnessing another example of the irresistible incentive to jump on the bandwagon of grifters that guarantee you a specific kind of social media audience and attention that ultimately results in profits.”

On the other hand, right-wing antisemites welcomed Massie’s words.

“Thomas Massie is doing the Lord’s work,” wrote Stew Peters.

Peters is a podcast host on the extreme right who has suggested that a “final solution” to the Jewish problem lies in deporting all the Jews from the United States.