William Michael “Bill” Daley (born August 9, 1948) is an American lawyer and former banker. He served as the White House Chief of Staff after Rahm Emanuel successfully ran for Mayor of Chicago from 2011 through 2012. He is the son of Richard J. Daley and brother of Richard M. Daley (who's successor was Emanuel as Mayor of Chicago). He also was the United States Secretary of Commerce from 1997 through 2000.