Persons subject to regulation by the Surface Transportation Board shall not knowingly and willfully provide, for candidates for Federal office or their representatives, service or goods related to their campaign without obtaining either prepayment or a binding guarantee of payment through a sufficient deposit, bond, collateral, or other means of security. The extension of credit to such persons shall not exceed the amount of the security posted.

(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]

For the purposes of this section, Federal office means the office of President or Vice President of the United States; or of Senator or Representative in, or Delegate or Resident Board Member to, the Congress of the United States.