xillary's probably trying to smuggle the Swedish Bikini Team onto the plane with her, maybe some bags o'cash.
Taking a private jet so as not to be near the great unwashed classes.
Elitist pig that she is
She was probably scared that security would find her "strap-on" and would mess up all of her flannel shirts in her suitcase.
Of course not. There is no way in hell the SS is going to let anybody search or have access to the vehicle used by anybody they are protecting. Why do you think Buh-Bette! refused to give them up?