Lois Lerner, the IRS official whose unit is at the center of the investigation into alleged Tea Party targeting, has been placed on administrative leave and a replacement has been named.
Ken Corbin was named acting director of exempt organizations during Lerner's leave. He is currently deputy director of submission processing in the wage and investment division.
Lerner invoked her Fifth Amendment right to not testify when called on by Congress this week.
"I have not done anything wrong. I have not broken any laws," she said Wednesday. "I have not violated any IRS rules or regulations and I have not provided any false information to this or any other committee."
Thursday, Republican U.S. Representative Darrell Issa said he would call Lerner back to testify before his committee on the IRS-Tea Party scandal.
"We are obligated to bring Lerner back because she did not properly take the Fifth (Amendment)," Issa said.
"She clearly chose to make her statements and then not open herself up to even any questioning as to the statement she made," said Issa, chairman of the House Oversight and Government Reform Committee.