Nina Teicholz - the author of the great book The Big Fat Surprise - was just disinvited from a food policy panel. It seems the other participants, one from CSPI and one from USDA, refused to participate if Teicholz was on the panel.
Teicholz suggested other people to replace her, but they were also turned down. Instead she was replaced by someone from the potato industry.
It's a great metaphor for the entire nutrition debate. The old guard won't even let opposing views be heard. They can't handle debate. Perhaps they can't handle the truth?
Politico: Teicholz disinvited from food policy panel