A state bank that is or that becomes a member of a federal reserve bank is by this part vested with all powers conferred upon member banks of the federal reserve banks by the terms of the Federal Reserve Act as fully and completely as if the powers were here specifically enumerated and described, and all the powers shall be exercised, subject to all restrictions and limitations imposed by the Federal Reserve Act, or by regulations of the federal reserve board made pursuant to the act. The right, however, is expressly reserved to revoke or to amend the powers herein conferred.