I'm not a lawyer or even close to that area of expertise, but the discussion connecting the security checks and the Constitution seem doubtful at best. Once you buy a ticket, as we all know, we agree to the terms and conditions on said ticket. We also know that this includes the possibility of a random security inspection. Why is this any different than random drug screening at work locations or a random point of inspection that police erect at certain junctions on a weekend night to catch possible DUI's?