In September 2012, after a nineteen-month review, the United States Department of Justice Office of the Inspector General cleared the Attorney General of any wrongdoing with regard to Fast and Furious, stating that there was "no evidence" that Holder knew about the operation before early 2011. The report did cite fourteen lower ranking officials for possible disciplinary action.[139] Holder responded to the internal investigation, saying "It is unfortunate that some were so quick to make baseless accusations before they possessed the facts about these operations – accusations that turned out to be without foundation and that have caused a great deal of unnecessary harm and confusion."[140]
In retrospective, David Weigel of Bloomberg Businessweek called the contempt of Congress vote "both popular and stunningly ineffective, enraging Holder and turning him into a more outspoken and implacable foe of Republican policies on voting rights and policing."[141] In August 2014, federal judge Amy Berman Jackson ordered the Justice Department to provide Congress with some of the previously withheld documents that had led Congress to hold Holder in contempt.[142]