The lengthy and messy battle around genetically modified food labeling may be coming to a head.  Last week, Senator Dianne Feinstein joined Senators Jeff Merkley, D-Ore.; Patrick Leahy, D-Vt.; and Jon Tester, D-Mont., to introduce legislation that would require national labeling of GMO ingredients.   The proposed legislation is being called the Biotechnology Food Labeling and Uniformity Act and is an alternative to legislation approved by the Senate Agriculture Committee that ... Fruit, Health, Healthy Recipes, Salud, Gmo Foods, Gastronomia, Gmo, Pesticide Free, Food And Drug Administration