Law professor Peter Henning, who prosecuted bank fraud cases while working as a government attorney in the 1980s, is quoted in a story about the federal trial of Ken Lay of Enron Corp. His attorneys have contended that a regulation cited in the government's indictment is "arcane" and confusing. "You can make fun of the forms and regulations, but these are serious regulations," Henning explained. He noted that a defense maneuver contending that it is a mere technical violation is not usually successful.