Hsu was indicted, following an FBI sting, for violating the Economic Espionage Act by conspiring to steal corporate trade secrets regarding an anti cancer drug. The defense requested a copy of the trade secret documents at stake. The government contended that the defense did not need access to the documents except under supervision of the judge. The defense maintained that constitutional and procedural requirements of criminal prosecutions dictate full access to the documents, so the defense of legal impossibility could be established-that Hsu could not steal trade secrets that did not exist. District court agreed with the defense; government appealed. Must the defendant be allowed full access to trade secrets that are a key part of a case? [United States v. Hsu, 155 F. 3d 189, 3rd Cir. (1998)]