A US court ordered the Theater of Security Agency to set up an appeals process to get off the No Fly List. But this is effectively useless since the TSA refuses to tell people why they were put on the list.

This list is based on vague suspicions, not on the punished person's actual conduct.

Banning someone from flying is a denial of rights, and should not be done without due process of law, based on real acts.

Surely any danger that these people might conceivably pose could be avoided by special searches.