Former New York Police Commissioner Bernard Kerik announced Wednesday that he was resigning from Rudolph Giuliani’s company Giuliani Partners. Kerik’s personal and work history has been under intense scrutiny over the past weeks–ever since he was nominated to head the Department of Homeland Security. Allegations have arisen about his ties to the mob, how he made millions working for private security companies, his work in Iraq and his personal life. Kerik said Wednesday, “I am confident I will be vindicated of any allegations of wrongdoing.”