The mission of Osage Nation Congress is to adopt a system of laws that promote the health, education, and well-being of Osage citizens. They preserve the checks and balances of the government by the independent exercise of legislative powers, and they carry out oversight responsibilities to enhance government accountability. They encourage and support the raising of tribal revenues and appropriate monies that support necessary government services. They are also tasked with preserving and protecting the Nation’s environment.

The Osage Nation Constitution vests the Osage Minerals Council with the powers to administer and develop the Osage Mineral Estate. The Osage Minerals Council consists of eight Council members that serve as the elected governing body for the mineral affairs of the Osage Mineral Estate. They conduct regular meetings on the first Friday and the third Wednesday of each month.