Originally Posted by PTravel

No government entity has the power to order someone to break the law. I'm going to repeat that because it's critical and no one seems to have noted it:

No government entity has the power to order someone to break the law.

That means that TSA cannot order a valet to trespass in a car by searching it. The valet can "volunteer," in which case he is personally liable for any damage done. Moreover, any evidence that results from ordering a valet to search a car is fruit of the poisonous tree and completely inadmissible in a court of law (not that TSA has much concern for the law).