The office of the Cherokee Nation Attorney General represents the tribe in all cases in the court where the Cherokee Nation is a named party, as designated by the Cherokee Nation Constitution. 

Article VII,Section 13 of the Cherokee Nation Constitution:

There shall be created an office of the Attorney General. The Attorney General shall be a citizen of the Cherokee Nation, admitted to practice law before the highest court of any state of the United States. The Attorney General shall represent the Nation in all criminal cases in the courts of the Nation, and in all civil actions wherein the Cherokee Nation is named as a party, and shall have such other duties as the Council may prescribe by law. The Attorney General shall be appointed by the Principal Chief and confirmed by the Council for a term of five (5) years. The Attorney General shall be authorized to designate such prosecutors and other assistants as deemed necessary to carry out the duties of office, and may only be removed from office in conformance with Article XI of the Cherokee Nation Constitution.