D.C. Mun. Regs. tit. 26, r. 26-A201
Any solicitation shall be made by the insurance company or its agents, including the mailing of canvassing material. A mailing list may be purchased from any source.
The solicitation material shall state that payment of premiums may be made in cash, by check, or by a charge to a specific credit card. No soliciting letter shall display the emblem of the credit card corporation so as to give the impression of inducement or preferential treatment, by the insurer's advertisement, of that corporation.
No credit card shall play a role in the solicitation and shall serve no other purpose than is served by a preauthorized check or similar means of payment.
Premium payments may be made by the card holder by using a credit card as long as there is no violation of insurance laws such as provisions dealing with rebating or discrimination.
D.C. Mun. Regs. tit. 26, r. 26-A201