wow. do you have a link to the transcript?
Sorry to butt in, but that was a good question. I thought I would look into it.
I found this link where he said the same thing but was an op-ed piece on national review online where he used the same line.
http://article.nationalreview.com/?q=YmU0NGQ0ZTQzZTU4Zjk4MjdjZWMzYTM4Nzk2MzQ0MGI=
I will have to go look. Since it was Memorial Day, it was a "best of" with interviews with Fred Thompson and Sowell. The Sowell interview must have been a while ago. There was no direct reference to this immigration bill resulting in a coup. But the conditions he spoke about, civil unrest being one, could apply in the possible aftermath of this immigration fiasco.