Obama Announces Resignation Of Rahm Emanuel, Names Chief Of Staff Replacement

WASHINGTON - OCTOBER 01: U.S. President Barack Obama (R) pats on the back of chief of staff Rahm Emanuel (2nd R) during Emanuel's resignation announcement in the East Room October 1, 2010 at the White House in Washington, DC. Obama announced the resignation of Emanuel, who will run for the mayor of Chicago, and named senior advisor Peter Rouse to be his interim chief of staff. (Photo by Alex Wong/Getty Images)