Which is it?
So, I'm thinking about Keith Ellison, a Muslim Democrat who has been elected to congress. There are many conflicts between the Qur'an and the U. S. Constitution. There is some big stink about what book his hand will be on when he takes some oath. I'm not concerned with that.

# Separation of church and state.
The Qur'an specifically states that Islam is the government and the government should ensure that Islam is the only game in town. The U. S. Constitution says that church and state affairs should be kept as separate as possible.
# Equal rights.
The Qur'an specifically states that in a court of law a man's testimony is worth that of two women. The U. S. Constitution says they are equal.
# Speech
The Qur'an specifically states that no one can disrespect Islam or Mohamed. The U. S. Constitution states that people have the right to criticize and indeed bring grievances to bare pretty much as they choose.

So, which is Keith going to follow? Doesn't he have to take an oath to uphold the laws of the U. S. and follow the U. S. Constitution? Well, the Qur'an also says Muslims may lie to the infidel and break contracts in order to promote Islam. So, no oath to a non Islamic government counts.
I'm trying very hard to avoid saying "You can't trust Muslims unless you are another Muslim." but that is where I'm headed. You know, I wonder if in many years they don't teach that political correctness was what brought down western civilization. The U. S. is unable to identify an enemy because that enemy is a way of life. If you cannot identify your enemy, you cannot defeat them. The U. S. is unable to bring itself to single out "Literal" Islam. That is probably because any one can pick up a book and read the words. How those words affect their actions is something else.

If I'm wrong on any point, please let me know.