Yup through clothing both front and back.

"...in lieu of coming to our headquarters for a 'line up'..." ...?

Except that's exactly their intent. Humiliation to force compliance.

^^

Pretty sure the 3 lovely (?) ladies who examined me on Saturday really wanted to humiliate me.

Not challenging you just pointing out the obvious problems with Implied Consent and the way TSA wants to twist that into unrecognizable shapes.

The bigger problem with TSA and their screening is that there is no printed material that lists exactly what TSA will or can do to a person. How do you give consent under those conditions.

TSA is a throwback to the late 1930's.

I would agree with your statement and say that they are very much representative of a police state.

For some reason I got SSSS'ed twice (with PreCheck) this year on two itineraries originating from Europe on UA (departing from AMS and BRU respectively) and was taken to a separate area near the gate at both airports where I got a very thorough questioning and patdown and had my bag emptied. I asked and they confirmed it was because of quadruple S on my boarding pass on both occasions (they basically told me 'sorry, United did it' when I asked them why I had it) . Only got it on the AMS/BRU to US segments, not on my onward flights.. While it wasn't nearly as bad as what the OP experienced, it does have a meaning in Europe from what I experienced.

I don't know about "agencies," but I do know that European airport security and airlines that fly to the US know exactly what SSSS is, and what they are supposed to do about it. The fact that you don't know about it is meaningless.

And you too, if you want to fly to the US, and you are chosen for Secondary Security Screening Selection.

Irrelevant. Has nothing to do with sovereignty - if an airline wants to fly into a US port, it must agree to follow US rules for doing so. This includes enforcing US security mandates such as providing passenger manifests, ensuring that carry-on rules are followed, and providing appropriate security - such as secondary screening when a passenger is selected for it.

On many flts. from Europe to the USA, DHS requires (via SSSS on bp) random pax be subject to EXTRA screening.
I'm in TSA pre-check (my bps, even from Europe to USA show TSA PRE CHECK), once I got SSSS (ZURICH TO JFK). I was sent to a special area near the gate; the agent had a p/o of 15 (or so) names who got SSSS and was given special screening...a few pokes inside my carry-on and was wanded.

TSA is a throwback to the late 1930's.
----I would agree with your statement and say that they are very much representative of a police state.
-----------------------------
If you're talking about the Gestapo, as evil as they were, at least they were efficient.
TSA on the other hand is an exercise in futility. I always laugh out loud at the
videos of Kokesh asking TSA dimwits a simple question that always trips them up--
how many terrorists has TSA caught to date?

I believe that answer is ZERO

I'm talking about the general militarization of the world during those times. Uniforms were the order of the day, people watching people, neighbors reporting neighbors, and of course the more horrid things that took place.

TSA is just a symptom of a much larger problem.

As a taxpaying American I hate thinking about the amount of money we are paying for their disorganized, no security/security playacting.

I prefer the term "Security Theater" (or Security Theatre if you're so inclined).