If you are a stereotypical conservative or liberal, this book is pretty much exactly what you think it is from the title. The text of the NKJV is interleaved with various glossy inserts and in-line comments about the history of the United States and how, from the beginning, the Christian religion was woven into the founding documents and society at just about every level.
Some of the references can be interesting, e.g. each president’s inauguration verse is noted as you come to it in the text. While it is convenient to have the notations directly in the bible, it seems the utility would only slightly be lessened by separating this into a separate bible study.
It is, however, as far as I can tell, completely non-critical, choosing to pick only supporting bullet-points for the culture-war’s battle over the role of Christianity in government. I for one would have preferred to see an honest discussion of the positives and the negatives rather than the party-line listing of the various rhetoric used to whip christians into a frenzy.
But perhaps that is a better topic for a separate book. And perhaps interleaving the bible with rhetoric isn’t the best idea in the first place.