sentences:  On May 26, 2010, Kahn was found guilty of conspiracy to defraud the United States and conspiracy to commit mail fraud as well as one count of mail fraud, in connection with the sale of worthless "bills of exchange" for the purpose of impeding the Internal Revenue Service and promoting other schemes to orchestrate tax fraud.Kahn was accused of manufacturing over $1 billion in fictitious financial instruments purporting to be drawn on the U.S. Treasury.Others found guilty in the affair were Stephen C. Hunter, Danny True and Allan J. Tanguay.