Issa, who chairs the House Committee on Oversight & Government Reform, fired an aggressive line of questioning at Holder, grilling the attorney general on President Barack Obama's nominee for labor secretary, Tom Perez, and pressing for the release of Perez's private emails.
"You didn't want us to see the details," Issa said. "Mr. Attorney General.. "
"I'm not going to stop talking now," Holder interrupted. "You have characterized something as something.. "
Issa then requested for the committee chairman to "inform the witness as to the rules of this committee."
Holder pressed on: "It is inappropriate and too consistent with the way in which you conduct yourself as a member of Congress. It's unacceptable, and it's shameful."