Here's industry reports
https://www.nationalbeefwire.com/doctors-group-applauds-comm...
https://www.wattagnet.com/business-markets/policy-legislatio...
And straight up lobbying groups
https://www.nationalchickencouncil.org/new-dietary-guideline...
https://www.meatinstitute.org/press/recommend-prioritizing-p...
Lobbying groups, putting out press releases, claiming victory...
Here's some things you won't find in any of the documents, including the PDFs at the bottom: community gardens, local food, farmers markets, grass fed, free range... Because agribusiness doesn't make money with those.
Just because you might like the results doesn't mean they aren't corrupt as hell
Much research indicates 0.5 to 0.7 g/lb provides most of the benefits, with continuing but diminishing gains above 0.7 g/lb. And the benefit is not just for "body building", but also for minimizing muscle loss during weight loss and improving insulin sensitivity. Other research indicates we may benefit from higher levels as we age.