I recall telling a fellow Canadian something a couple of years ago when they had wondered aloud why Americans were so adamant about their guns and why they were so up in arms over government health care. I explained to him that both issues stem from the same national sensibility and that America, as a nation was born of a distrust of government. The English crown was the problem back then, but the DNA today remains the same - at least for many Americans - government cannot be trusted.
A light bulb went off for the Canadian in question. It did not change his opinion on health care I am sure, but it did clarify his understanding of why people would have certain opinions on certain issues. In fact, he was the type whom I'm sure could and would apply that reasoning to views on other political topics.
Of course the explanation was a gross over-simplification of the conservative viewpoint on a number of issues. But the simplification had its benefits in that it crystalized quite quickly an understanding that had not existed before. Also, I got lucky. The conversation could have taken an entirely different, and more argumentative course if I had added one word to my explanation: healthy. If I had said America was born of a healthy distrust of government, I'm sure I would have made no progress in that discussion.
The reason for the back story is that it relates to another issue. The original rationale for America is quickly disappearing. The idea that the United States was the child of a core human wish for freedom (not democracy, but rather liberty) has been subverted in two fundamental ways.