You obviously did not read the book. Buchanan agrees with you and says that there is lots of good in this country. He points out much of the good this country and the west have done like ending slavery and fighting fascism and communism. He wants to continue this great country. Surely, you don't oppose that?
How does it feel to be on the same side as Buchanan?
The point of that last snide remark was to illustrate that personal dislike for a person or group should not interfere with your judgement.
Does it?
Yes, I have an immense personal dislike for Pat Buchanan. He's an isolationist and an opportunist and I'm not so sure he cares for more than his on self-advancement.