Robert Matthew Bowman v. United States

I. Whether 18 U.S.C. § 2252(a)(4)(B) authorizes conviction upon proof that a phone containing child pornography once crossed state lines at an unspecified prior time, when there is no evidence that the possession of child pornography itself caused such movement? II. Whether Article I, Section 8 of the United States Constitution permits Congress to impose criminal sanctions for all conduct undertaken using materials that have moved in interstate commerce, however remotely, whether or not the criminal conduct caused such movement?