Rick Santorum Jabs Jon Huntsman and Mitt Romney in New Ad

Former U.S. Sen. Rick Santorum of Pennsylvania released a commercial on Tuesday jabbing former Utah Gov. Jon Huntsman who announced his candidacy for the Republican presidential nomination earlier in the day. Using the same theme that Huntsman has embraced -- a biker riding through the desert -- Santorum knocked the new candidate on social issues and jabbed Mitt Romney, the Republican front-runner, while he was at it.