In Shulman's responses, he did not acknowledge targeting of tea party groups. At a congressional hearing March 22, 2012, Shulman was adamant in his denials.
"There's absolutely no targeting. This is the kind of back and forth that happens to people" who apply for tax-exempt status, Shulman said at the House Ways and Means subcommittee hearing.
The portion of the draft report reviewed by the AP does not say whether Shulman or anyone else in the Obama administration outside the IRS was informed of the targeting. It is standard procedure for agency heads to consult with staff before responding to congressional inquiries, but it is unclear how much information Shulman sought.
The IRS has not said when Shulman found out that Tea Party groups were targeted.
Shulman was appointed by President George W. Bush, a Republican. His 6-year term ended in November. President Barack Obama has yet to nominate a successor. The agency is now run by an acting commissioner, Steven Miller.
The IRS said in a statement Saturday that the agency believes the timeline in the IG's report is correct, and supports what officials said Friday.
"IRS senior leadership was not aware of this level of specific details at the time of the March 2012 hearing," the statement said. "The timeline does not contradict the commissioner's testimony. While exempt organizations officials knew of the situation earlier, the timeline reflects that IRS senior leadership did not have this level of detail."
Lerner's position is three levels below the commissioner.
"The timeline supports what the IRS acknowledged on Friday that mistakes were made," the statement continued. "There were not partisan reasons behind this."
Rep. Charles Boustany, R-La., chairman of the House Ways and Means Committee's oversight subcommittee, said the report "raises serious questions as to who at IRS, Treasury and in the administration knew about this, why this practice was allowed to continue for as long as it did, and how widespread it was."