President-elect's administration top-heavy with senators and colleagues from home town of Chicago

State's house of representatives launches inquiry into Rod Blagojevich's possible impeachment

President-elect makes Nobel prize winner energy secretary and creates new position of 'climate tsarina'

Caroline Kennedy poised to enter party politics with inauguration in the new year almost a certainty

Barack Obama's choice for chief of staff had conversations with disgraced governor taped by FBI

Republican team rushes through radical measures, from coal waste dumping to power stations in national parks