Waiting for Obama in Copenhagen

Although Barack Obama hasn't said much in public, White House Press Secretary Robert Gibbs confirms that the President has been working the phones with world leaders, pushing for a new deal on global warming. Obama plans a last-minute appearance at the UN climate summit, where the United States has been criticized for offering too little, too late, but his chief delegate, Todd Stern, said the US won't offer to cut greenhouse emissions any more than it already has. David Corn is in Copenhagen for Mother Jones magazine.