If by "Biblical Nation" we mean a nation (a people) that mostly adhere to biblical principals and morals, I sadly disagree. There are many Americans who adhere to biblical principals and morals - but they don't constitute being the nation.
The majority of today's TV shows and movies are amoral or immoral - many are anti-Christians and anti-nuclear family. Many if not most of our schools indoctrinate students with anti-Christian, anti-biblical views. We have laws and policies that support and defend abortion and transgender mutilations. Many so-called Christian churches and Jewish synagogues support the same evils. I could go on. The point is that the 'nation' is at or maybe past a tipping point. The hearts and minds of many if not most Americans do not adhere to biblical values, principals and morals.
It is not being followed, but the foundation remains.
I agree 100%