524 Christian Nationalism: The latest slur or a real issue?

The label "Christian Nationalism" has been thrown around by so many people that I wondered: (1) What defines Christian Nationalism? (2) Is it Christian? (3) Is it a real issue or just the latest slur like "Racists, Nazis and Deplorables?" I asked AI and gave it free rein to answer and was given one answer. But when I told AI to not use garbage sources like Social Media posts and to take steps to ensure that its reply was accurate I got a completely different answer.