Even Sen. John McCain (R-Arizona), who???s a sad caricature of himself, is vowing to defeat Obama???s possible nomination of Susan Rice as secretary of state, claiming, ???She???s not very bright.??? That???s ironic considering that McCain brought us Sarah Palin, who wasn???t sure if Africa was a country or a continent, claimed Sputnik bankrupted the U.S.S.R., asserted that Paul Revere warned the