I don't know about suing the US Government, but this article on obesity and the official food guide pyramid is pretty damning. I know I can't eat 6-11 servings of grains, cereals, rice and pasta per day without gaining serious weight. Two servings a day is probably the max for me! On the other hand, I can eat more than 2-3 recommended servings/day from the meat, beans, eggs and nuts category, and easily more than 3-5 servings of vegetables.