An article in VOX makes the case that the TSA should be abolished. Their point? There is no evidence that the TSA makes us any safer. None. And there is plenty of evidence that the time and money we spend on security theater damages our country far more than terrorism could ever hope to do.
But what I found especially interesting is near the end of the article. They propose making airport security be the responsibility of the airline. That way, some airlines could provide tougher security for those people who want it, and other airlines could provide more casual security, for those people who would rather trade a little security for convenience and personal dignity. It would also allow us to determine what security measures actually help prevent terrorist acts, and which ones are a complete waste of time (e.g., checking liquids and nail clippers).
Personally, I think airport security has always been a waste of time. It was originally implemented in the wake of a rash of airplane highjacking, but what reduced the incidence of highjacking was Cuba throwing highjackers in jail.
I think it would do more to prevent terrorism if we would stop killing random civilians using drones.