Corker (R-Tenn.) has been on a rampage this week over the Senate GOP’s reluctance to vote on his amendment. And in a private party lunch on Wednesday as most Republicans blamed Sen. Rand Paul (R-Ky.) for blocking amendments to a defense bill, Corker defended Paul and argued that his blockade was being used as an excuse for the rest of the party to avoid other amendment votes.

Graham, who has been blocking Paul, then jumped in. The South Carolina senator, who has argued Republicans should give Trump room to negotiate on trade, unloaded on Corker. Graham was irked over Corker’s speech in which he said the GOP doesn’t want to “do anything that might upset the president, according to four sources familiar with the matter.

“You don’t care about the Republican Party because you’re leaving,” Graham told Corker, who is retiring.