John Shafer, who oversaw a small group of IRS workers who screen applications for tax-exempt status, told the investigators that the initial tea party application was spotted by one of his workers in February 2010.
Shafer said he decided to send it to higher-ranking supervisors because it was unclear whether the group would qualify for the tax exemption and because of the media attention the conservative groups were garnering at the time.
Managers in the IRS' Exempt Organizations office in Washington ended up expressing interest in the case, he said. Shafer said it was normal to pay careful attention to such cases to make sure similar applications are treated the same way.
"This ends up to be a case that we want to make sure we're consistently going to look at, and that's where this started," Shafer said.
The transcript was released by Rep. Elijah Cummings, D-Md., who had made public excerpts of the interview earlier this month. The full 205 pages provide new details of how the screening of conservative groups began but lack bombshell, damaging new revelations about involvement by top officials inside or outside the IRS.
The IRS has been under fire from the White House and members of both parties since May, when one of its officials publicly apologized for targeting conservative groups' applications for tax-exempt status for close examination. President Barack Obama has replaced the agency's acting director and several other top IRS officials have stepped aside.
Several Republicans have said they believe the focus on conservative groups came from the White House. No direct ties to White House or any other top administration officials have yet to be publicly established in ongoing investigations by three congressional committees and the FBI.
Asked in the June 6 interview whether he believed the White House was behind the decision to target conservative groups, Shafer said, "I have no reason to believe that."
Cummings, top Democrat on the House Oversight and Government Reform Committee, said in a letter to that panel's chairman that the testimony "debunks conspiracy theories about how the IRS first started reviewing these cases."
While conceding that investigators have concluded that some IRS officials were aware of the inappropriate targeting of conservative groups, Cummings wrote, "These facts are a far cry from accusations of a conspiracy orchestrated by the White House to target the president's political enemies."
Rep. Darrell Issa, R-Calif., the committee chairman, said Cummings' release of the transcript "will serve as a road map for IRS officials to navigate investigative interviews with Congress."
He criticized Cummings for declaring this month that it was time for Congress to move on from the probe and added, "Americans who think Congress should investigate IRS misconduct should be outraged by Mr. Cummings' efforts to obstruct needed oversight."
Cummings has complained that Issa has allowed reporters to view full transcripts of interviews committee investigators have conducted with some other IRS officials.
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