"Appellee was indicted in the District Court for Southern Illinois for violation of [a federal statute] by the shipment in interstate commerce of [an] imitation or semblance of condensed milk or cream. . . . The trial court sustained a demurrer to the indictment on the authority of an earlier case in the same court . . . .
"[T]he demurrer challenges the validity of the statute on its face . . . . The prohibition of shipment in interstate commerce of appellee's product . . . is a constitutional exercise of the power to regulate interstate commerce. As the statute is not unconstitutional on its face, the demurrer should have been overruled and the judgment will be reversed."