America needed to draw the line years ago, regardless of the bitching, moaning, and whining. America is not just an open "jobs faire," it's a nation with values, principles, laws. What the Tea Party represents is an awareness, conscious or subconscious, of just how far we have deviated from our precious core.
There are forces that want nothing more than to balkanize America, to create a "nation" of disparate and warring tribes who can be manipulated by a cynical class of kleptocrats. They've done a pretty effective job, but we are finally on to them.