Sorry, FRiend, but you did not swear to defend the U.S. You swore to support and defend the Constitution.
But yes, TSA is in full violation of the Fourth Amendment. To wit:
The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no Warrants shall issue, but upon probable cause, supported by Oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized.
Does TSA now fit the garment of "domestic enemy"? Does a direct violation of the Constitution (4th amendment) by Federal agents rise to that level? Is TSA now an enemy combatant?
Oaths are meaningless. Check the Lakin trial. Of course, most if not all of what the Executive and Legislative branches do is a violation of the Constitution, but they have the guns and the courts. Any questions?