4. Such associations shall have the right to regulate and govern their affairs as provided and set forth in their respective bylaws, so long as such bylaws are not in conflict with any law of this state. The membership shall be bound by the bylaws of the association as the same exist at the time of joining or as they may be amended in the future. Provided, no amendment to such bylaws affecting the policy contract or rate of contribution of the membership shall become valid and binding upon the membership unless notice of such proposed change in the bylaws is given each member of such association at least twenty (20) days prior to any annual meeting or special meeting of such association called to consider such proposed amendment and a certified copy thereof is filed with the Insurance Commissioner and approved by the Commissioner; provided further, that no notice of such proposed amendment shall be required if the same is adopted in compliance with any of the provisions of this article or a notice or order of the Insurance Commissioner made in pursuance thereof. Bylaws or amendments thereto, which are not in conflict with any of the provisions of this article, shall be approved by the Insurance Commissioner.