Originally Posted by
Carl Johnson
That is about right, actually. The key is whether the subject of the interrogation perceives that he is free to leave.
No one involved in any dialogue or 'exception' situation with a TSO is ever 'free to leave' (ask Rand Paul).
In theory, TSA has no authority to detain anyone. In practice, between the LEOs who answer to TSA and the physical set up of the checkpoints (and the over-arching fear of being put on the No-fly list as retaliation), TSA has unlimited abilty to detain and has successfully established this many times.