John Ratzenberger played one of America's most beloved sitcom characters, Cliff the Mailman, on "Cheers" for 11 years. Since then, he has become one of the most-employed voices in Pixar movies, with a role in the latest, "Finding Dory." But he's also a longtime Republican activist who will be appearing in four panels at Politicon starting Saturday and running through the weekend in Pasadena, California. LifeZette talked to the actor, 69, about his opinions on the issues involved in two of his four panels at the weekend gathering -- his passion for the Second Amendment ("Tons of Guns") and his...