the paper is green, so maybe it is recycled paper or something. Just throwing that out there... green is being used more to symbolize environmentally friendly products. Anyway, I beleive it is still successful in getting its point across, whether or not it can be applied strictly in this country, or anywhere around the world. I think it is a very clever idea.
IIRC 100% of American paper comes from paper tree farms making paper production 100% renewable and having nothing to do with deforesting South America or anywhere. I'm pretty sure deforesting in South America is mainly to develop farmland. It makes you think why the WWF wouldn't know that.