Senate Minority Leader Mitch McConnell has inserted himself into the latest campaign finance case before the U.S. Supreme Court.  

McConnell's involvement has spurred groups opposed to special-interest money in campaigns to take to the airwaves to criticize him.  Non-profit groups Public Campaign Action Fund and USAction launched a television ad Friday across much of Kentucky.  The 30-second ad is critical of McConnell's role in asking the court to strike down limits on campaign contributions.  The commercial warns the result would set off an unlimited influx of campaign cash from lobbyists, bankers and Big Oil executives.