(a) Mandatory provisions.--The bylaws of the association must provide for:

(b) Other provisions.--Subject to the provisions of the declaration, the bylaws may provide for any other matters the association deems necessary and appropriate.

(c) Corrective amendments.--Except as otherwise provided in the bylaws or code of regulations, if any amendment to the bylaws or code of regulations is necessary in the judgment of the executive board to cure any ambiguity or to correct or supplement any provision of the bylaws or code of regulations that is defective, missing or inconsistent with any other provision thereof, with the declaration or with this subpart or if an amendment is necessary in the judgment of the executive board to conform to the requirements of any agency or entity that has established national or regional standards with respect to loans secured by mortgages or deeds of trust on units in cooperative projects (such as the Federal National Mortgage Association and the Federal Home Loan Mortgage Corporation), to comply with any statute, regulation, code or ordinance which may now or hereafter be made applicable to the cooperative or association, or to make a reasonable accommodation or permit a reasonable modification in favor of handicapped, as may be defined by prevailing Federal or State laws or regulations applicable to the association, proprietary lessees, residents or employees, then, at any time and from time to time, the executive board may at its discretion effect an appropriate corrective amendment without the approval of the proprietary lessees or the holders of any liens on all or any part of the cooperative, upon receipt by the executive board of an opinion from legal counsel who is independent from the declarant to the effect that the proposed amendment is permitted by the terms of this subsection.