any book, but let him swear he will uphold the constitution of the United States and let him prove he understands what that is. Let him swear that he is an American before he is a muslim, the latter being the most critical part. I support Goode and will let him know so in a letter.
To swear on the Bible is just as incorrect, etc. When a man serves caesar, he ought to serve him well. It is important for Christians to be exemplary citizens.