perfidy

Well, that is a tough one. America is an ideal. Americans are those who hold those ideals. They include, but are not limited to, the these beliefs: that we each have a right to life, liberty, and the pursuit of happiness; that we all should have freedom of speech, freedom of assembly, freedom of the press, freedom of religion, freedom to bear arms; in the idea that government exists to benefit the people, not the other way around; independence and self-reliance; in rule of law and that we are all equal before the law; and a generalized hatred of the French. Well maybe not the last one.

But that is the core of it. People who do not agree with the things on that list are, at least in some sense, un-American. I freely cribbed these concepts from a couple of pages I found on the IN-TER-NET. Check 'em out.