Watch Mining for God (2015) : Full Movie Online Free America has long been called a Christian nation. In fact, over 70% of adults in America identify themselves as Christian. Yet when filmmaker Brandon McGuire heads to the streets to ask a few clarifying questions about how Christianity is defined within our culture, he is shocked by the answers he finds. This provocative documentary takes us deep within the American mind and brings to the surface the big ideas that have influenced the way we think about ourselves and about God.