You're attaching more significance to the paragraph than I.
I read it as a.) Newt made a mistake in addressing immigration as he did, b.) it's one more piece of baggage he'll have to overcome. Then, c.) nobody's perfect.
I believe Sowell would support Gingrich if he wins the nomination. But I didn't view the article as an endorsement at all.
That’s why I stated “Kinda”, because I realize that I could be reading more into it than is there. I didn’t view the article as an endorsement, either, but thought that paragraph was rather odd in the context of the article.