Republican senator Johnny Isakson says “approving Eric Holder” was “the worst vote I ever took in the United States Senate.” (He’s served more than eight years in the Senate.)

On Laura Ingraham’s radio show this morning, the Georgia senator went on to say that the “best” action he has taken in Congress recently was writing a letter to Holder asking him to resign after the Operation Fast and Furious controversy — he said he hopes his recommendation will eventually be followed.