Notable clients of Gray and Company included Adnan Khashoggi, Saudi Arabian billionaire and arms dealer, the government of Haiti under the Duvalier dynasty, American commodities trader and financier Marc Rich (who in 1983 was indicted for trading with Iran during the hostage crisis and a variety of other charges, fled the country, and was later granted a pardon by President Bill Clinton), the Teamsters Union, and Korean religious leader Sun Myung Moon.