The US House last week passed the Safe and Accurate Food Labeling Act (H.1599) preempting states from requiring the mandatory labeling of foods containing genetically modified organisms (GMOs).  House passage comes as more states are entertaining the mandatory labelling of GMOs.  A major concern with state mandates is the impossible task that food manufacturers would have in trying to comply with an unworkable patchwork of conflicting state requirements.  Currently, the states of Maine, Connecticut and Vermont all have some kind of GMO law on the books, but there are an additional 17 states with active legislation pending.