The bird is gone
Imagine a world where the American government signed a conservation act to "restore all indigenous flora and fauna to the Great Plains," which means suddenly the Great Plains are Indian again. Now fast-forward fourteen years to a bowling alley deep in the Indian Territories. People that bowling alley with characters named LP Deal, Cat Stand, Mary Boy, Courtney Peltdowne, Back Iron, Denim Horse, Naitche, and give them a chance to find a treaty signed under duress by General Sherman, which effectively gives all of the Americas back to the Indians, only hide that treaty in a stolen pipe, put it in a locker, and flush the key down the toilet. Ask LP Deal and the rest what they will trade to get that key back--maybe, everything.