A conservative group headed by one of former president Bill Clinton's harshest critics is airing an ad that pokes fun at presumptive Democratic nominee John Kerry's haircut, designer clothing and property holdings. Citizens United, headed by former Republican congressional aide David Bossie, began airing the ad, a parody of MasterCard's "priceless" commercials, on Sunday in select presidential battleground states. The ad shows Kerry and boats at a marina as an announcers says: "Massachusetts Senator John Kerry. Hairstyle by Christophe's $75. Designer shirts: $250. Forty-two foot luxury yacht: $1 million. Four lavish mansions and beachfront estate: Over $30 million." Another shot...