(a) All agreements to extend credit to candidates for Federal office or their representatives by persons subject to regulation by the Surface Transportation Board (1) must be in writing, (2) must contain a detailed description of the deposit, bond, collateral, or other means of security, used to secure payment of the debt, and (3) must be signed by all parties to the agreement. A copy of each such agreement must be filed with this Board's Bureau of Operations in Washington, DC, within 20 days of the date of its execution.

(b) [Reserved]