Always a knowledgeable and accurate interpeter of the science and fallacies: https://proteinpower.com/drmike/2015/12/05/dietary-guidelines-for-americans/
“In urging publication of the guidelines before the spending resolution expires, advocates say they hope to avoid a debate over controversial riders, including one in the House agriculture appropriations bill that would limit the evidence for the recommendations to only the strongest scientific proof.”
Nice idea, but how would it work on a practical level? We have the Monterey Bay Aquarium sustainability guide for fish, which I have certainly used to make dinner choices. And I tend not to eat beef mostly because of all the resources. But then you have the huge amount of produce grown in CA in a severe drought. So in that case is Nebraska beef more sustainable than California almonds? And then we have poverty and food insecurity. Its one thing to suggest that people who can afford a nice sushi dinner opt for the local salmon instead of the bluefin tuna. But people who have a hard enough time finding and affording food at all don’t have so many choices. Tons of waste on packaging, processing and transport too, not just production. What’s sustainable in Seattle may not be sustainable in Denver or Miami.