Isn't anyone going to mention the TSA? If you want to fly, they can search you up one side and down the other, detain you for hours or even days, and confiscate anything they damn well please.
By simply doing business with an airline (buying a ticket for travel), my 4th amendment rights vanish.
And don't tell me it's a privilege to fly. It is a willing buyer (passenger) and a willing seller (air carrier). You can charter a Lear jet and there is no TSA there to hound you.
The TSA security checks have become no different than DUI roadblocks. They can pull you aside and hound you all they want, and there is nothing you can do about it.
Your papers please...
Did you ever see the mess those things make when they smack into a neatly tended lawn.