There actually was a legal challenge against this, and right before a deadline to respond the TSA clarified it's current policy: https://www.aclu.org/cases/bier

There actually was a legal challenge against this, and right before a deadline to respond the TSA clarified it's current policy: https://www.aclu.org/cases/bierfeldt-v-napolitano?redirect=cpredirect/39922 https://www.aclu.org/cases/bierfeldt-v-napolitano?redirect=c... So if it happens, you can go to court for your individual case and possibly win, which according to this comment happens all the time: https://news.ycombinator.com/item?id=28635430 https://news.ycombinator.com/item?id=28635430 So more is needed, obviously. It seems to me that the status quo is that you're effectively guilty until proven innocent, and the people accusing you don't have much of an incentive to stop.