Donald Lambro

The flimsy, hard-to-believe reasons Ruemmler gave for supposedly hiding the length and breadth of this unfolding scandal from Obama are hard to swallow. It was because the IG's report was not finalized at that point, she argued, and he could not be seen interfering with the investigation until it had been completed.

Obviously, this gave Obama presidential deniability to hide behind. Last week, he said he first heard about the IRS scandal when the story broke in the news media. But the critically important question that a bunch of House and Senate investigating committees are preparing to ask is this: What did the president know and when did he know it?

There are lots of reasons to be suspicious of the White House's explanations thus far and even to conclude that a coverup was underway. The day before Carney revealed for the first time that senior White House officials knew all about this, senior presidential adviser Dan Pfeiffer said on a number of TV interviews Sunday that the White House didn't know about the IG report until it was released last week.

Earlier, Carney had told the press that Ruemmler knew "only about the fact that the IG was finishing a review" of the IRS abuses that he labels as merely "inappropriate."

The White House's previous claims that no one really knew about the details of the ongoing investigation is laughable on its face. People knew about this a long time ago elsewhere in the administration.

Treasury Deputy Secretary Neal Wolin and other political appointees in the administration were among those who knew about the IG's investigation last year. And it was long known on Capitol Hill, too.

J. Russell George, Treasury's Inspector General for Tax Administration, wrote to Rep. Darrell Issa, who chairs the House Oversight and Government Reform Committee, in July of 2012 to brief him on the investigation.

"Communications between the Treasury Department and the White House also have turned out to be broader than initially acknowledged," according to a Washington Post story Tuesday. "At one point, Mark Patterson, the Treasury chief of staff, talked about the timing of the report with Mark Childress, deputy White House chief of staff," the Post reported.

As for Ruemmler's claim that the president could not be told about the investigation because he could not interfere with an ongoing audit, experts reject that specious notion out of hand.

Joseph Newman, chief spokesman for the Project on Government Oversight, sees no legal barriers that would prevent the White House counsel from telling the president of an upcoming audit. "Once the president knows about some wrongdoing, he shouldn't be prevented from taking remedial action," Newman said.

This is a scandal of enormous proportions and the worst of it, as is often the case, is the coverup. Little more than 10 days ago, the White House was telling us that Obama's legal counsel only knew that an audit was conducted, but knew nothing about its details.

Now we know that she, the chief of staff and others in authority around the president knew all about it.

Does anyone really, truly to believe Obama was kept in the dark about this?

A large majority of Americans, including 59 percent of independents, believe that the IRS "deliberately harassed conservative groups by targeting them for extra scrutiny," according to a Post poll Tuesday. Three-fourths of those polled called the IRS actions "inappropriate." How about illegal?

It should be clear by now that the Obama White House has been engaged in another coverup that cries out for the enactment of a special prosecutor. The sooner the better.

Donald Lambro

Donald Lambro is chief political correspondent for The Washington Times.