The supreme executive power
of the Osage Nation is vested in a Principal Chief who shall dutifully support the Constitution and laws of the Osage Nation and shall see that the laws are faithfully executed, administered and enforced. There shall be an Assistant Principal Chief, who shall have the same qualifications as the Principal Chief and serve for the same term and in the same manner. All other administrative offices, departments, agencies and instrumentalities of the Osage Nation including, but not limited to, public trusts, boards, village committees, authorities and committees are also included in the Executive Branch.
The Legislative branch of the Osage Nation
creates the laws and resolutions which form the framework thru which the Osage Nation government works. The mission of the Congress is to:
Adopt a system of laws that promote the health, education and well-being of Osage citizens;
Preserve the checks and balances of the government by the independent exercise of legislative powers;
Carry out oversight responsibilities to enhance government accountability;
Encourage and support the raising of tribal revenues and to appropriate monies that support necessary government services; and
- Preserve and protect the Nation's environment
The Judicial powers of the Osage Nation
are vested in one Supreme Court, in a lower Trial Court and in such inferior Courts as the Osage Nation Congress may ordain and establish for the development, maintenance and administration of the Tribal Justice System.
The Osage Mineral Council
consists of eight Osage Mineral Council members that serve as the elected governing body for the mineral affairs of the Osage Mineral Estate. The Osage Mineral Council conducts regular meetings every third Wednesday of each month in the Council Chambers located on the Osage Tribal Campus.