Like a completely refurbished “pre-owned vehicle,” Al Gore seems to be positioning himself to Hillary Clinton’s left and as greener than John Kerry for a run at the 2008 Democratic nomination for president. His slogan might well read “reelect Al Gore.” The former vice president’s slashing attacks on the administration and his stalwart, if misguided, opposition to the Iraq war leave him without the complications and complexes that will devil Clinton as she seeks to appeal to the unforgiving left of the Democratic Party. And Gore may be a man whose time has come in his party. It was he...