Each state joining herein shall appoint three representatives to a commission hereby designated as the Northeastern Forest Fire Protection Commission. One shall be the state forester or officer holding an equivalent position in such state who is responsible for forest fire control. The second shall be a member of the legislature of such state designated by the commission or committee on interstate cooperation of such state, or if there be none, or if said commission on interstate cooperation cannot constitutionally designate the said member, such legislator shall be designated by the governor thereof; provided that if it is constitutionally impossible to appoint a legislator as a commissioner from such state, the second member shall be appointed by the governor of said state in his or her discretion. The third member shall be a person designated by the governor as the responsible representative of the governor. In the event that any province of the Dominion of Canada shall become a member of this Commission, it shall designate three members who will approximate this pattern of representation to the extent possible under the law and practices of such province. This Commission shall be a body corporate with the powers and duties set forth herein.