Here are the materials (the opinion is here; h/t Indianz):
State of Oklahoma v. Tyson Foods
Tyson Chicken Successfully Asserts Cherokee Treaty Rights in Environmental Defense
As we reported last fall here, poultry producers including Tyson Chicken asserted that many of the State of Oklahoma’s efforts to enforce state environmental laws against them must fail because the waterways at issue are owned at least in part by the Cherokee Nation. The Northern District of Oklahoma substantially agreed.
Here is the opinion (thanks to M.M.) — Tyson Opinion and Order