Attorney General refuses to investigate Bush advisors

WASHINGTON (CNN) - U.S. Attorney General Michael Mukasey on Friday said he will not ask a federal grand jury to investigate whether two top Bush administration officials should be prosecuted for contempt of Congress.

A letter from Attorney General Michael Mukasey was issued one day after House Speaker Nancy Pelosi asked  Mukasey to look into whether White House chief of staff Josh Bolten and former White House counsel Harriet Miers committed contempt of Congress in its investigation of the 2006 firings of several U.S. attorneys.

Pelosi said the two were unresponsive to Congress's probe, while the White House argues that contempt laws don't apply to the president or any of his staffers who invoke executive privilege.