Reading their letters and the First Amendment of the US Constitution, I infer that this nation's founders noted that religions have been at the center of great deal of trouble, so they precluded the US government from getting involved in religion, i.e. "... shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof..." Over the centuries, various religions have laid claim to various morals; consider the difficulties outsiders are having today in the Middle East, for example.
