In January, power shifts as the Democrats take control of Congress. President George W. Bush has been juggling flashpoint issues – Iraq, immigration, energy security, Chinese power -- and now will face a Congress marked by a re-energized opposition. The House is now decidedly Democratic. And, as it stands now, the Demorcats hold a 51-to-49 lead in the Senate, but that could change with Sen. Tim Johnson's (D-SD) health. All observers wait to see if political players will find common ground or be enmired in gridlock.
John Harwood examines the changing face of U.S. politics, and what America – and the world – should expect in 2007.