I see, I took DH at his word on that one, my bad.There is actually no specific law whatsoever in the United States that requires that the President must be Christian. So you could be Buddhist, Muslim, Hindu, etc.. However the President does swear the Oath of Office with their hand on the Bible (but even still you could be a Muslim while doing that). So no, its more like the fact that we have a high Christian population and that those Christians tend to prefer to elect people with the same beliefs as them (again nothing legally requiring that they must only elect a Christian).
Still, the US is a highly religious country, the state is secular, but I can't get myself to personally consider the US as a "proper" secular country due to many elements which are mostly cultural in nature.
Some examples.
The phrase "God bless America" is a completely normal phrase to hear from politicians.
Creationism is taught in a couple of states as if it were equal to, or even more correct, than natural evolution.
Swearing on the bible in courts of law and in the inauguration of head of state, and probably other situations.
Creationism is taught in a couple of states as if it were equal to, or even more correct, than natural evolution.
Swearing on the bible in courts of law and in the inauguration of head of state, and probably other situations.