I found the subtitle of his book (How Hubris, Ideology, and Greed are Tearing America Apart) intriguing and bought it. This book is part of the pile on George W's administration and Presidency.
However Buchanan was preaching to the choir (me, the reader) for the most part. I agree that our country has been "Balkanized" in terms of divisions of race, religion, income and education.
I prefer Buchanan's rants on The McLaughlin Group or MSNBC to his books or articles.
If you've been hiding under a rock the past 10 years or haven't read a book or newspaper, then you may find Buchanan's book and arguments enlightening.
Borrow it from your public library if you get the chance or just watch Pat on TV.