http://en.wikipedia.org/wiki/Rudy_Giuliani
It was in 1983 that Giuliani indicted financiers Marc Rich and Pincus Green on charges of tax evasion and making illegal oil deals with Iran during the hostage crisis, in one of the first cases in which the RICO Act was employed in a non-organized crime case. Rich and Green fled the United States to avoid prosecution; both were controversially pardoned by the executive order of President Bill Clinton in 2001.