For many decades I have pointed out the obvious to almost every liberal I have met, all of who think they have a real principle for their hatred of America's glaringly obvious conservative cultural, legal, institutional history. They all want the biblical foundation of America's inheritance trivalized and destroyed.
A nation's population can decide upon what reality it wants to base its law, culture, and decisions about right and wrong. Evidence that what a culture thinks about its foundational reality is very important and distinctive is seen in the freedom and prosperity of that culture.
Yes, a nation can believe what it wants to believe, but only a fool would think that all faith and beliefs systems are anywhere near the same, or that they show no evidence that one creates true freedom while others create differing levels of bondage and despair.