Dear Christian Nationalist,
Barack Obama is not a Muslim (but so what if he were?).
He's a Christian. Now he might not be what some of you call a Christian, or a "True Christian," but - you might want to sit down for this - you yourself are certainly not what other people call "True Christian," either.
So how can I say Obama is a Christian? Well, when someone claims to be Christian, what choice do I have but to take them at their word for it? By the way, the same goes for Mormons. If Mormons say they're Christians, then they're Christians. Why would I bother to challenge that? You might have issues with it, say, among others in your family or in your church. But in the public square, that just doesn't play.
Don't clog up our national discourse with your internal religious disagreements.