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Is Herman Cain his own biggest opponent?

12:20

Top Talkers: Herman Cain continues his rise in the polls. Per a new CNN/ORC poll, the GOP '12 candidate is second behind Romney with 25 percent of the vote. But how well do his proposals stand up under scrutiny? The Morning Joe panel – including the Council on Foreign Relations' Richard Haass and Time's Mark Halperin – discusses.