WASHINGTON -- White House chief of staff Denis McDonough and other senior advisers knew in late April that an impending report was likely to say the IRS had inappropriately targeted conservative groups, President Barack Obama's spokesman disclosed Monday, expanding the circle of top officials who knew of the audit beyond those named earlier.
But McDonough and the other advisers did not tell Obama, leaving him to learn about the politically perilous results of the internal investigation from news reports more than two weeks later, officials said.
The apparent decision to keep the president in the dark underscores the White House's cautious legal approach to controversies and reflects a desire by top advisers to distance Obama from troubles threatening his administration.
Obama spokesman Jay Carney defended keeping the president out of the loop on the Internal Revenue Service audit, saying Obama was comfortable with the fact that "some matters are not appropriate to convey to him, and this is one of them."
"It is absolutely a cardinal rule as we see it that we do not intervene in ongoing investigations," Carney said.
Republicans, however, are accusing the president of being unaware of important happenings in the government he oversees.
"It seems to be the answer of the administration whenever they're caught doing something they shouldn't be doing is, 'I didn't know about it,' " Sen. John Cornyn (R-Texas) told CBS News. Obama advisers argue that the outcry from Republicans would be far worse had McDonough or White House Counsel Kathryn Ruemmler told the president about the IRS audit before it became public, thereby raising questions about White House interference.
Still, the White House's own shifting information about who knew what and when is keeping the focus of the IRS controversy on the West Wing.
Former IRS Commissioner Douglas Shulman heads to Capitol Hill on Tuesday, giving lawmakers their first opportunity to question the man who ran the agency when agents were improperly targeting tea party groups.