[TheRealThing]

▶ Was the United States founded as a nation for Christians, or as a nation based on full and free religious liberty, freedom of conscience?

It matters. If the idea is, "Hey, this nation is for Christians, but you other people can live here," that's a very different construct from a nation founded on ultimate respect for freedom of conscience.

My view is that the Framers desired that our nation would be one where citizens grounded their morality and laws in religious truth, but they, ultimately, valued freedom of conscience supremely .

That is impossible to prove or disprove. However, I am really happy to see you've brought it up, and then there is this tidbit within the writings of the founding documents;

"When in the Course of human events, it becomes necessary for one people to dissolve the political bands which have connected them with one another, and to assume among the powers of the earth, the separate and equal station to which the Laws of Nature and of Nature’s God entitles them, a decent respect to the opinions of mankind requires that they should declare the causes which impel them to the separation."

Some bullets just cannot be dodged. An examination of the true foundation of American law must begin with the question: “Is the law of God supreme or is it subject to the laws of peoples and nations?” Two answers to this question are possible. The first answer is that God exists and his law, including his laws pertaining to the creation of nations, governments and constitutions, are supreme, right and absolute. The second answer is that whether or not God or his law exist, the law of peoples and nations, are supreme, right and absolute at least until they are changed. *[Lonang Institute]

So, you are in the second camp Sombrero?