WASHINGTON: If Ken Starr didn't exist, Bill Clinton might have to invent him. Not only has the President's approval rating soared since the independent counsel began investigating the Lewinsky affair, the President and first lady have also raked in $2 million in the last six months for their legal defense fund, according to Thursday's New York Times. Compare that with the $1.3 million the Clintons spent three-and-a-half years scraping together for Whitewater costs. What's their secret? Relaxed limits on contributions -- not to mention direct mailing that invokes Starr's name.