Its insulting but the government isn't implementing security for nefarious reasons or to protect us from the influence of foreign capitalists. They are trying to keep people from being blown up by our enemy. I would expect that if the Soviet Union had invaded us in the 80's that we'd been subjected to the same scrutiny.
No, it's not as bad as what they do in Israel, but...this ain't Israel. It's the U.S. of A. We're supposed to be different. We can and should put up with reasonable searches, with probable cause, under a direct threat. But when we give up our liberties in a general way, for an non-specific "danger," to ensure generic "safety," I have to wonder just what it is we're preserving.