WASHINGTON (CNN) -- A huge increase in workload, rather than deliberate targeting, led to "foolish mistakes" and the political discrimination in the Internal Revenue Service cited by an inspector general's report, the agency's outgoing commissioner said Friday.
The testimony by Steven Miller, who was forced to announce his resignation this week as acting IRS commissioner, came at the first congressional hearing on the matter that has put President Barack Obama's administration on the defensive.
Rep. Dave Camp, chairman of the Republican-led panel, and other GOP members sought to depict the controversy as indicative of government gone wild, with the IRS abusing conservative groups and other political foes of the administration.
Democrats on the committee also expressed outrage at the political targeting of conservative groups seeking tax-exempt status, but they noted that the top IRS official at the time was appointed by Republican President George W. Bush, not Obama.
They also noted that the inspector general's report stated that there was no evidence of any political motivation or influence from outside the IRS.
In his opening remarks, Miller described an IRS division that handles requests for tax exempt status by political groups as overwhelmed by a surge that followed the Supreme Court's 2010 Citizens United decision, which greatly expanded the ability of corporations, unions and other organizations to participate in election spending, though not through direct contributions to candidates or parties."I think that what happened here was that foolish mistakes were made by people who were trying to be more efficient in their workload selection," Miller said, calling the practices described in the inspector general's report as "intolerable" and a "mistake," but "not an act of partisanship."
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