The American Dietetic Association does the same thing, as do countless other organizations and companies. You might be interested in reading some of Marion Nestle's books. She's all over this topic; very interesting reads. The politics behind food isn't something we usually think about, but it's definitely there.
"If you drop an egg, you don't say, 'Oh, shoot' and drop the other 11, do you?"
-Source unknown, but obviously brilliant
Reached goal 4/16/2010...but kind of afraid to look these days