Ah, setting up a straw man, not suprising. First, in founding documents the refrence is always "God" or "Creator", never Christ.
God is almost exclusively used by the Christian faith to describe the "Supreme Being". They don't reference Allah, Buddah, etc. as those would be "a God".
I could submit the Decleration of Independence, but were all familiar with that.
Is it coincidence that we as a country have adopted laws that roughly follow the 10 commandments in many ways? How about swearing on bibles, printed money, the pledge of allegiance (yes, it was changed in 1954) etc. There are many examples of "God", not Allah, Buddah, Muhammed or any other figure from any other religion. I will also submit the following:

In 1777. Continental Congress voted to spend $300,000 to purchase bibles which were to be distributed throughout the 13 colonies! And in 1782, the United States Congress declared, “The Congress of the United States recommends and approves the Holy Bible for use in all schools.

Also, 106 out of the 108 first universities were Christian.



In the Supreme Court's 1892 Holy Trinity Church vs. United States, Justice David Brewer wrote that "this is a Christian nation."