tara mergener is in chicago with the latest on this news on a passengers replacement. good morning, tara. >> good morning, betty. seems the president already has someone in mind for the job. there's been speculation about emanuel's departure for weeks now and today it could become official. rahm emanuel is heading home to run for mayor of chicago. as white house chief of staff, the brash illinois native has been one of the president's most trusted and powerful advisers. >> he has been the leader of, i mean the title "chief of staff" in many ways says it all. >> reporter: emanuel expected to be replace on an interim basis by pete rouse, a long-time aide who has spent decades shaping washington policy from behind the scenes. >> pete's strategic sense has played a big part in the direction of virtually every big decision that's made inside of this white house. >> reporter: emanuel's departure comes as no surprise to washington insiders and there's speculation more top obama administration officials could be on the move. >> two years, people start to leave. they burn themse

>>> i'm tara mergener in washington. one of president obama's most trusted and powerful advisors is stepping down. the latest coming up. ♪ the turn will make you think. ♪ make you re-examine your approach. change your line. innovate. and create one of the world's fastest-reacting suspensions, reading the road 1,000 times per second. it's the turn that leads you somewhere new. introducing the new 2011 cts-v coupe. from cadillac. the new standard of the world. she fought to get our veterans the first full combat care center in california. her after school law is keeping a million kids off the street and out of gangs. and she's fighting every day to create new jobs. i'm working to make california the leader in clean energy. to jump-start our small businesses with tax credits and loans to create thousands more california jobs. i'm barbara boxer, and i approve this message... because i want to see the words made in america again. and i don't want my skin to show it. (announcer) gold bond ultimate restoring lotion. coq10 helps