Murdoughnut
Well sized member
4th Amendment, Bill of Rights.
(Penn & Teller used to sell a metal engraved version to keep in your pocket that you could give to the TSA when you "hand over your rights" after the metal detector beeped.)
Doesn't apply since there is no right to fly via private commercial carrier. TSA isn't depriving you of a liberty when they require you be subjected to screening. If the police decided to stop and search you randomly as you drove out of Colorado and into Kansas, then you'd be subject to unlawful search (assuming no warrant or probable cause), as they'd be denying your civil right to travel across state borders legally by means of your own personal vehicle.