Right. It's a show based on the format of having guests on who disagree with him so he can debate them on equal terms (and hawk their books). But when it's a conservative who disagrees with him on immigration, suddenly he doesn't want him on because it will promote his book. It's a clear sign that Medved doesn't want to deal with the substance of his arguments.
Actually, Mr. Medved's position is "clear." We may surmise that he doesn't want Corsi to appear because of the immigration issue, just as we may surmise that he doesn't want Corsi to appear because of the trans-fat issue. Mr. Medved's stated reason is because Corsi believes that George W. Bush has a secret agenda to dissolve the United States into the North American Union.
That bad habit has made his radio show increasingly unbearable for me to listen to. It doesn't matter whether I support his point or not; his name-calling makes me cringe, particularly when he's losing the argument.