Re: large incentive to make fraudulent ones. Indeed, there is. :-) http://www.reuters.com/article/2012/02/17/us-usa-bonds-forgery-idUSTRE81G11620120217 http:/

Re: large incentive to make fraudulent ones. Indeed, there is. :-) http://www.reuters.com/article/2012/02/17/us-usa-bonds-forgery-idUSTRE81G11620120217 http://www.reuters.com/article/2012/02/17/us-usa-bonds-forge... " Italian police said on Friday they had seized about $6 trillion worth of fake U.S. Treasury bonds and other securities in Switzerland, and arrested eight Italians accused of international fraud and other financial crimes." (I know, not exactly what you were getting at, but it's actually one step better - not just creating forgeries of authentic bonds, but creating absolutely new entities)