The audit by a Treasury Department inspector general found that IRS employees singled out groups with names like "tea party" and "patriots" for special scrutiny that delayed their applications for tax exempt status.
Carney said no one in the White House intervened in the inspector general's audit. He says Obama did not learn of the probe until there were news reports about it.
Carney noted that the practice by the IRS workers ended in May 2012.
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