There's a very large, smelly elephant in the living room that almost no one ever is willing to acknowledge.
The point is, no one but Muslims have been ever implicated in any type of terrorism threats against the US since 911. ALL of the "security" measures in place since then are specfically in response to those threats. It's certainly not politically correct to say, but it is the truth. I do not believe that a good majority of Americans would say they feel safer because of the actions of the TSA. I DO believe a good majority of Americans are becoming increasingly appalled at the idea that they just have to "take" these ridiculous infringements under the cloak of "safety."
So yes, if you are an American, or someone who has been through the process of becoming a legitiimate resident alien (which does involve some security screening) then I believe you can be considered "Not a Threat" of terrorism on the grand scale that these TSA measures aim to prevent. I also believe that any foreign national traveling through our country should reasonably expect to be subject to somewhat different security protocols. And, GOD FORBID, if you fit the same ethnic criteria as those people - the ONLY people - who have plotted and executed terrorist plots against the US, then you can expect to be held to even tighter security measures.
As many of you have said "No one said it's fair, but it's necessary." Fair is not a requirement in my opinion, but logic and common sense are.