Health And Nutrition Facts

health and nutrition facts
What are the laws regarding restaurants displaying health/nutrition facts on the packaging of the product?

I am writing a paper about this and am having trouble finding what I’m looking for. Are there any laws right now that force restaurants (especially fast food) to do this? I noticed that McDonald’s already does do it but other companies do not.

They have to have it available because of food allergies and the like, but they don’t have to display it. They figure if you are diabetic you will know not to order death by chocolate, or you’ll ask first.

As far as packaging, generally restaurants don’t really have packaging, unless you mean the wrapper the big mac comes in?