ted engage in illegal sexual activity. In other words, the illegal sexual activity must have not been merely incidental to the trip. United States I. Hayward, 359 F.3d 631, 637-38 (3d Cir. 2004). See also United States Garcia-Lopez, 234 F.3d 217, 220 (5th Cir. 2000) (The district court did not err in instr