Anyone who lets most of the enemy through, is my enemy.
They fail enough GAO tests for me to conclude that they are not going to stop any attack by anyone. The attack will either be discovered by someone or some group and fail, or partically succeed, but the TSA will have nothing to do with it either way. Even some lazy, un-motivated terrorist who flunked out of Al Qaeda school could get past the jobs program that we have at the airports and everyone knows it.
And by saying I view the TSA as almost being my enemy, I mean the organization as a whole, and not necessarily the individual screeners (although at least 30% of them should be FIRED immediately).
This sneaking onto the plane nonsense makes me want to have what Northwest (and I assume a few others) used to have for jumpseating.
The jumpseater fills out a two sheet form, a white copy and a yellow one. They go down to the airplane and have the captain sign it. The gate agent knows they need that yellow copy back with the captain's signature on it. That way, there's no slinking onto a plane for a free ride without checking in up front. No TSA, or anyone else for that matter, waddling in with their ID in their pocket with the gate agent being done with them assuming they talked to the crew.