I have nothing to do with the below petition and I don't know the person who wrote it, but I wanted to post a link in case anybody was interested. My personal opinion is that there may be another approach to get sesame labeled that has a better chance of success, but I definitely support the goal of the petition.
"Update the Food Allergen Labeling and Consumer Protection Act (FALCPA) of 2004 to include sesame and mustard seeds."
https://wwws.whitehouse.gov/petitions#!/petition/update-food-allergen-labeling-and-consumer-protection-act-falcpa-2004-include-sesame-and-mustard/GnQqzj7w (https://wwws.whitehouse.gov/petitions#!/petition/update-food-allergen-labeling-and-consumer-protection-act-falcpa-2004-include-sesame-and-mustard/GnQqzj7w)
ETA - I didn't sign partly because that 3 million figure is way off, but I'll leave this post here to document the effort.