Mitt Romney (R-Utah) and Rep. George Santos (R-N.Y.) exchanged harsh words on the House floor Tuesday night before the State of the Union began, with the Republican senator telling the freshman GOP lawmaker that he should not be in Congress.

As lawmakers and other guests were entering the chamber ahead of President Biden’s speech, Romney and Santos were spotted having a brief but tense conversation.

“I didn’t expect that he’d be standing there trying to shake hands with every senator and the president of the United States,” Romney told reporters after Biden’s speech concluded Tuesday night, when asked why he had confronted Santos.

“Given the fact that [Santos is] under ethics investigation, he should be sitting in the back row and staying quiet instead of parading in front of the president and people coming into the room,” Romney added.

Romney told reporters that Santos may have responded to him, but that he did not hear it on the House floor.

After the State of the Union concluded, Santos lashed out at Romney on social media.