(2) engaged in conduct that constitutes a substantial step to commission of the crime. See United States Farner, 251 F.3d 510, 513 (5th Cir.2001); Fielder, 452 F.3d at 755. [2] With respect to Count II, the statute 18 U.S.C. § 2423(b) is used by the federal government to prevent the sexual abuse of