Yes, I mind, I should not be asked to do your reading for you. But just this once…

US v Davis sets the basic precedent for the Administrative Search Doctrine. And I do mean BASIC. (Pre TSA obviously)

US v Hartwell specifically addresses the scope of the administrative search and how it applies to an airport checkpoint. Very specifically. (post TSA)

You might also want to review United States v. Marquez, 410 F.3d 612, 616 (9th Cir. 2005), Chandler v. Miller, 520 U.S. 305, 323 (1997), and City of Indianapolis v. Edmond, 531 U.S. 32, 47–48 (2000) when you “do your own reading” as it has some clarifications on the Administrative Search Doctrine. All of these decisions can be found with a google search. And you could have at least gone through the powerpoint document link I provided, had you done so you would not have asked.