House Speaker Nancy Pelosi wants an investigation into whether the Bush administration broke the law when it fired a group of federal prosecutors.
She says that what she calls the politicizing of the Justice Department cannot go unreviewed.
House Democrats last week recommended a criminal investigation to see if administration officials broke the law in the name of national security. The report cited the interrogation of foreign detainees, warrantless wiretaps, retribution against critics, manipulation of intelligence and the fired prosecutors.
Barack Obama has been more cautious. He has said he believes there is a need to look forward as opposed to looking backward.
Pelosi appeared on "Fox News Sunday."