Let's just use a name that "simplified" christian principals (I'm gonna pick a name from a hat, not necessarily accurate). The defining text of christianity could not agree on it's own principals so along comes Constantine who "simplifies" the principals thus resolving the contradiction. Now anytime you follow the principal set forth by Constantine although you call them christian they aren't.
Why not? I'll pull another name out of a hat: St. Thomas Aquinas. If the general Christian community agrees on the worth of the
Summa Theologica, and references that work in defining their own actions, beliefs, principles, etc. then those are considered Christian Principles.
Religion, any religion, is a set of generally agreed upon (arbitrary) definitions of conduct. Some "inspired" authors were accepted into the canon, and their explanations taken at value. Others were not, and their explanations were rejected.
So how can you (or anyone) claim the USA was founded on christian principals?
In this case, because we have a clear line of sight from Founding Fathers through their inspirations, through to Christian Principles. Those weren't their only inspirations, but, as the commercial says, "it's in there!"
Let me reverse the question: Why are you opposed to the concept that the US might have been founded on Christian Principles?
BTW, care to name the christians that were founders of the USA?
Sure thing, I believe this is the complete list of the 55 delegates who signed the U.S. Constitution and their Christian religious affiliation:
Daniel Carroll, Maryland, Catholic
Thomas Fitzsimons, Pennsylvania, Catholic
Roger Sherman, Connecticut, Congregationalist
Nathaniel Gorham, Massachusetts, Congregationalist
John Langdon, New Hampshire, Congregationalist
Nicholas Gilman, New Hampshire, Congregationalist
Abraham Baldwin, Georgia, Episcopalian
William Samuel Johnson, Connecticut, Presbyterian
James Madison Jr., Virginia, Episcopalian
George Read, Delaware, Episcopalian
Daniel of St. Thomas Jenifer, Maryland, Episcopalian
David Brearly, New Jersey, Episcopalian
Richard Dobbs Spaight, Sr., North Carolina, Episcopalian
Robert Morris, Pennsylvania, Episcopalian
Gouverneur Morris, Pennsylvania, Episcopalian
John Rutledge, South Carolina, Episcopalian
Charles Cotesworth Pinckney, South Carolina, Episcopalian
Charles Pinckney, South Carolina, Episcopalian
Pierce Butler, South Carolina, Episcopalian
George Washington, Virginia, Episcopalian
Benjamin Franklin, Pennsylvania, Episcopalian
William Blount, North Carolina, Presbyterian
James Wilson, Pennsylvania, Presbyteran
Rufus King, Massachusetts, Congregationalist
Jacob Broom, Delaware, Lutheran
William Few, Georgia, Methodist
Richard Bassett, Delaware, Methodist
Gunning Bedford Jr., Delaware, Presbyterian
James McHenry, Maryland, Presbyterian
William Livingston, New Jersey, Presbyterian
William Paterson, New Jersey, Presbyterian
Hugh Williamson, North Carolina, Presbyterian
Jared Ingersoll, Pennsylvania, Presbyterian
Alexander Hamilton, New York, Episcopalian
Jonathan Dayton, New Jersey, Episcopalian
John Blair, Virginia, Episcopalian
John Dickinson, Delaware, Episcopalian
George Clymer, Pennsylvania, Episcopalian
Thomas Mifflin, Pennsylvania, Lutheran
Would you like the list of those who signed the Declaration of Independence or the Articles of Confederation?