Former Massachusetts Gov. Mitt Romney's (R) presidential campaign released this video Sunday of Sen. John McCainJohn McCainThe trouble with Rex Tillerson   Senate: Act now to save Ukraine A Cabinet position for Petraeus; disciplinary actions for Broadwell after affair MORE (R-Ariz.) campaigning for Romney in the 2002 Massachusetts gubernatorial race.

McCain, introducing Romney at a 2002 campaign event, says Romney is a man of "unimpeachable integrity," that he is proud to be in Romney's company, and that he is committed to Romney's race. McCain's comments draw applause and laughter from Romney's supporters.