William Daley is resigning as White House chief of staff and budget chief Jack Lew will take his place, President Obama will announce Monday, Fox News has learned.

Daley entered the White House a year ago after Rahm Emanuel left to become Chicago mayor, replacing Daley's retiring brother, Richard Daley, in that post.

Obama was to announce the change in a statement Monday afternoon. The change will be effective at the end of this month.

Read more: http://www.foxnews.com/politics/2012/01/09/source-obama-chief-staff-bill-daley-to-step-down/#ixzz1izbYucCp