Who believes in American Exceptionalism?
The cultural civil war in which America is engaged is, in large measure, about American exceptionalism. Conservative America generally believes in the concept; liberal America generally finds it chauvinistic and dangerous.
What is American exceptionalism? The belief that America often knows better than the world what is right and wrong. This belief drives most of the world's opinion-makers crazy. And it particularly infuriates the American Left, that part of America that trusts what is called "world opinion" more than it trusts the American people.
And from where does this belief in American exceptionalism derive? Mostly from the religious beliefs that underlie American values. That is a major reason the current culture war is about the place of Judeo-Christian values in American life. Those who believe that America must remain a Judeo-Christian nation (in terms of values) are far less respectful of international institutions than those who wish to make America a secular nation.
Judeo-Christian America -- American exceptionalism America -- loves John Bolton, has contempt for the United Nations, mistrusts the World Court, regards Amnesty International as another morally confused leftist organization, thinks little of the world's media and academic elites, and regards "world opinion" as morally confused and left-wing media manipulated.