Sen. John McCain is prodding the Justice Department to wrap up its two-year-old investigation into David Petraeus , the former Army general and Central Intelligence Agency director . McCain , the Arizona Republican who will helm the Senate Armed Services Committee once new lawmakers take office in January , wrote a letter to Attorney General Eric Holder on Tuesday asking for a `` fair and timely '' conclusion to the case . He questioned the pace of the investigation into whether Petraeus inappropriately shared information with Paula Broadwell , his mistress who was also writing a biography of the former leader of U.S. military efforts in Iraq and Afghanistan . `` At this critical moment in our nation 's security , Congress and the American people can not afford to have this voice silenced or curtailed by the shadow of a long-running , unresolved investigation marked by leaks from anonymous sources , '' McCain wrote . Petraeus resigned in 2012 , citing his affair . But he has n't faded from the public eye . He 's maintained his security clearances and backed President Barack Obama 's plan to escalate the fight against ISIS in Iraq and Syria this fall . Timeline of the Petraeus affair . He 's also joined the investment firm KKR and has taken roles with Harvard University , the University of Southern California , the University of Exeter , Team Rubicon and the Royal United Services Institute . McCain said he regretted wading into an ongoing investigation , and said he would n't judge whether Petraeus should face charges -- only that he wanted a quick conclusion . `` Without commenting on the underlying merits or anticipating the outcome of the investigation , I can conclude this is a circumstance in which the principle of 'justice delayed is justice denied ' is certainly at play , and that this matter needs to be brought to resolution , '' McCain wrote . `` Furthermore , the fact that you and others within your department have weighed-in publicly on the case raises questions about whether this investigation is being handled in a fundamentally fair and appropriate manner , '' he wrote .
Sen. John McCain urged Attorney General Eric Holder for a `` fair and timely '' end to the investigation into David Petraeus . The Arizona Republican said he was concerned that the FBI had not been forthcoming with Congress about its investigation. McCain says the investigation could lead to Petraeus 's voice being `` silenced or curtailed ''