; and (2) the terms expenditure for political activities and issuer have the meanings given the terms in section 14C. (b) Listing on exchanges Not later than 180 days after the date of enactment of this section, the Commission shall, by rule, direct the national securities exchanges and national securities associations to prohibit the listing of any class of equity security of an issuer that is not in compliance with the requirements of any portion of subsection (c). (c) Requirement for vote in corporate bylaws (1) Vote required The bylaws of an issuer shall expressly provide for a vote of the board of directors of the issuer on any expenditure for political activities— (A) in an amount that is more than $50,000