damage the operation had to US-Mexico relations. On June 7, 2012, under the threat of being held in contempt of Congress for not turning over additional requested documents, Attorney General Holder appeared at his seventh Congressional hearing, where he continued to deny knowledge of gunwalking by high-level officials. By then, the Justice Department had turned over more than 7,000 pages of documents. During the June 12, 2012, Senate hearing, Eric Holder stated, "If you want to talk about Fast and Furious, I'm the Attorney General that put an end to the misguided tactics that were used in Fast and Furious. An Attorney General who I suppose you would hold in higher regard was briefed on these kinds of tactics in an operation called Wide Receiver and did nothing to stop them—nothing. Three hundred guns, at least, walked in that instance." Holder cited a briefing paper on "Wide Receiver"; the DOJ Office of Legislative Affairs later clarified that the briefing paper was about the Fidel Hernandez case, prepared for Holder's predecessor, U.S. Attorney General Michael Mukasey before his meeting with Mexican Attorney General Mora on November 16, 2007. The Hernandez Case had ended October 6, 2007, before Mukasey entered office November 9, 2007. The office further explained, "As Attorney General Holder also noted in his testimony, and as we have set forth in prior correspondence and testimony, he took measures and instituted a series of important reforms designed to ensure that the inappropriate tactics used in Fast and Furious, Wide Receiver, Hernandez, and other matters about which the Department has informed Congress are not repeated." The later DOJ OIG investigation concluded "Attorney General Mukasey was not briefed about Operation Wide Receiver or gun 'walking,' but on a different and traditional law enforcement tactic that was employed in a different case." On June 20, 2012, the House Oversight and Government Reform Committee voted along party lines to recommend that Holder be held in contempt. At issue were 1,300 pages of documents that had not been turned over to Congress by the DOJ. Earlier that day, President Obama had invoked executive privilege over those documents, marking the first time the privilege had been asserted during his presidency. Issa contends that the Obama executive privilege claim is a cover-up or an obstruction to the congressional probe. On June 28, 2012, Holder became the first sitting member of the Cabinet of the United States to