It would help if you never put out in public that anybody paid (time/flight) for and brought an escort across state lines...I would never do it anyway. The Mann Act is a federal law which has existed since 1910. The feds use it all the time, and they have used it in MN several times against guys/clients who do what I said above. Another area is that many guys make mistakes; she flies into the airport, and you pick her up there. Finally, your favorite companion wants you to drive her around, run errands, or whatever. I have even heard of clients who have become her personal driver...driving her to dates. All of these are "promotion of prostitution."

It's best to keep ones involvement in any of the activities to oneself.