oh man, you sound like the type of person that would fall for the intentionally misleading labels that makes it sound like one thing but is in fact absolutely not that thing. just yesterday, there was a link to an article about the lies on food packaging.
so, labeling requirements are one thing, but requiring that the information is straight forward and leaves no options for misleading would be great. I just don't think there's ever going to be a way from preventing someone from finding loopholes.