(CNN) - Bill O'Reilly, the conservative Fox News host, believes same-sex marriage advocates have a more convincing argument than opponents, who do nothing but rehash scripture to make their point. "The compelling argument is on the side of homosexuals," O'Reilly said Tuesday on Fox. "That's where the compelling argument is. 'We're Americans. We just want to be treated like everybody else.' That's a compelling argument, and to deny that, you have got to have a very strong argument on the other side. The argument on the other side hasn't been able to do anything but thump the Bible." O'Reilly has...