An Obama campaign donor spent approximately 1,529.25 hours as a lead investigator looking into the IRS conservative-targeting scandal as an attorney for the Justice Department, according to a report from Judicial Watch.

Barbara Bosserman, who donated $6,750 to President Barack Obama’s campaigns and the Democratic National Committee between 2004 and 2012, was appointed to aid the Justice Department and the FBI in their analysis. The investigation, which sifted through claims that the IRS specifically targeted conservative-leaning organizations that sought tax exemption in 2010 and 2012, resulted in no criminal charges against any officials in the Obama administration.

“Is it any surprise that this compromised investigation found no reason to prosecute anyone in the Obama IRS scandal?” Fitton said.

When Judicial Watch filed its Freedom of Information Act appeal in 2014, it sought to overturn a lower court’s ruling to keep the information sealed. When the Department of Justice failed to respond in a timely fashion to the request, Judicial Watch sued.

In 2014, House Committee on Oversight and Government Reform Chairman Darrell Issa and House Subcommittee on Economic Growth Chairman Jim Jordan wrote a letter to then-Attorney General Eric Holder to remove Bosserman from the Obama IRS scandal investigation.

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“By selecting a significant donor to President Obama to lead an investigation into the inappropriate targeting of conservative groups, the Department has created a startling conflict of interest,” the letter stated. “It is unbelievable that the Department would choose such an individual to examine the federal government’s systematic targeting and harassment of organizations opposed to the president’s policies … At the very least, Ms. Bosserman’s involvement is highly inappropriate and has compromised the administration’s investigation of the IRS.”

After Bosserman’s hours spent working on the investigation were publicly revealed, Judicial Watch lampooned the Department of Justice’s claims of impartiality.

“These numbers, extracted from the Obama administration after two years of hard-fought litigation, show the central role that a conflicted Obama donor played in the Justice Department investigation of the Obama IRS scandal,” Judicial Watch President Tom Fitton said. “Is it any surprise that this compromised investigation found no reason to prosecute anyone in the Obama IRS scandal?”