Guests: U.S. Secretary of Housing and Urban Development Shaun Donovan, professor Melissa Harris-Perry, former New York Rep. Rick Lazio, journalist Larry King, writer/director Adam McKay Topics: Mitt Romney's Presidential campaign, Republican hyperbolic rhetoric about Obama, Sarah Palin's bus tour, Rep. Anthony Weiner scandal, Lee Atwater, John Edwards scandal, the US budget deficit, link between cell phones and cancer, businessmen as politicians