Conservatives used to argue that full disclosure of campaign contributions would prevent corruption. Now they're making a pitch for secrecy. If the names of high-profile political donors were made public, contributors could face bullying and harassment from liberals out to "muzzle" free speech. That's according to Senate Minority Leader Mitch McConnell in a recent speech. The Wall Street Journal has warned that corporations might face boycotts and picket lines if their names are revealed.