United States v. Stevens, __ F.3d __ (9th Cir. Sept. 13, 2006) (district court prejudicially erred by applying amended definition of "minor" -- which was changed to include a fictitious minor -- in child pornography prosecution to enhance sentence, since the modification was a substantive change and not just a clarification and to do so was prohibited under the Ex Post Facto clause). http://caselaw.lp.findlaw.com/data2/circs/9th/0530597p.pdf