Freedom of religion is the right of a person to believe in and practice whatever faith he or she chooses, including no religious beliefs at all. Various court rulings have interpreted the First Amendment to mean that the government may not promote or give special treatment to any religion. However, church and state are not completely separated in the United States. For example, sessions of Congress open with prayers, court witnesses swear oaths on the Bible, and families may use public vouchers to pay for religious education.