Tensions rose during a House hearing on Wednesday as Democrat Rep. Ted Lieu clashed with UN Ambassador Mike Waltz.
Lieu questioned Waltz over the ongoing conflict with Iran, asking if US troops stationed in Jordan were adequately protected after an Iranian drone attack killed US service members.
Waltz shot back, telling Lieu to focus on getting reelected, prompting a heated exchange between the two.
Lieu repeatedly shouted at Waltz, accusing him of not knowing basic facts about the conflict and not caring about the number of US troops wounded in the Iran war.
Waltz defended his stance, citing Defense Department numbers that indicated over a hundred US troops had been wounded, but Lieu disputed this figure.
Lieu also criticized Waltz's past position as national security adviser, suggesting that his current role was a result of being fired by the president.
Waltz fired back, accusing Lieu of suffering from Trump Derangement Syndrome and questioned the effectiveness of the Iranian military in the ongoing conflict.
The exchange highlights the deep divisions within the US government over the handling of the Iran conflict and the role of US troops in the region.
