With respect to any provisions of this Chapter regarding regulation of expenditure lobbyists, registration requirements, amendment of registration information and monthly disclosures, or restrictions on gifts, campaign contributions, or bundled campaign contributions from lobbyists, approved by the voters, the Board of Supervisors may amend those provisions if all of the following conditions are met:
(a) The amendment furthers the purposes of this Chapter;
(b) The Ethics Commission approves the proposed amendment in advance by at least a four-fifths vote of all its members;
(c) The proposed amendment is available for public review at least 30 days before the amendment is considered by the Board of Supervisors or any committee of the Board of Supervisors; and
(d) The Board of Supervisors approves the proposed amendment by at least a two-thirds vote of all its members.