I don't think the question can be answered from that angle...that is, the angle of the Constitution. The Constitution recognizes a Creator (aka God) yet a loud fractional minority has successfully removed God or any reference to Him from so many public places, citing and blowing out of proportion the Non-Constitutional "Wall of separation".
Of course both Republicans and Democrats both dodge on the issue knowing that in that area all they can do is play to the dead center...that is...if they want to get elected.
...sorry to rant..
In answer to the actual question: There are very few Unconditional guarantees in the Constitution. Clearly both the words and the intent of the Constitution are not "in stone". They are both liquid...able to be interpreted as time and regime's go by...
End of rant
