A vicious political ad was released today in South Carolina by Ron Paul's campaign targeting Sen. Rick Santorum.

The ad's text:  "Don't be fooled…Rick Santorum,  a record of betrayal….another serial hypocrite who can't be trusted."

Those are certainly strong words and they reminded me of a story I had filed more than six years ago… in which I questioned Santorum about his support of tort reform… introducing legislation to limit pain and suffering damages to $250,000 while supporting a lawsuit his wife filed for twice that amount.

Take a look at our "Nightline" story from Nov. 10, 2005: