What is the fine-grained topic of the following text: Told through expert interviews, vintage footage and compelling images, the five-and-a-half hour film explores how the enshrining of a faith-driven moral code in the Constitution paradoxically caused millions of Americans to rethink their definition of morality. Only return the topic.
The paradoxical impact of enshrining a faith-driven moral code in the Constitution on Americans' definition of morality.