No expenditure shall be made, other than overhead or normal operating expenses, by an agent or independent contractor, including but not limited to an advertising agency, on behalf of or for the benefit of any candidate or committee unless it is reported by the candidate or committee as if the expenditure were made directly by the candidate or committee. The agent or independent contractor shall make known to the candidate or committee all information required to be reported by this section. This section is intended as a limitation and does not authorize any expenditures which are otherwise prohibited by this chapter. (Ord. 4700-NS § 423, 1974)