In recognition of the doctrine contained in the Constitution of this state requiring the three branches of government to be separate, it is declared to be the policy of the General Assembly that the duties, powers, and functions of the State Board of Pardons and Paroles are executive in character and that, in the performance of its duties under this chapter, no other body is authorized to usurp or substitute its functions for the functions imposed by this chapter upon the board.
OCGA § 42-9-1