I have to disagree.

The topic of discussion is the restrictions as they pertain to air travellers to, from and within the USA.

We could open seperate threads for each nationality of air travellers (discussing each nationality's constitution and its application to "citizens" as opposed to "the people" and the impact of TSA telling other countries how to handle security for flights to the U.S.), but I'll happily leave that to OMNI, as it really doesn't help the topic, which is, as pointed out by Cholula, the ever-changing TSA regulations and their impact on air travellers.

This, btw, means air travellers worldwide, because other countries usually (have to) copy these ever-changing TSA regulations for flights to the U.S.