; and (2) interest collected on loans financed or guaranteed from the proceeds of such bonds. (e) Full faith and credit Payment of interest and principal with respect to any Clean Energy Victory Bond issued under this section shall be made from the general fund of the Treasury of the United States and shall be backed by the full faith and credit of the United States. (f) Promotion (1) In general The Secretary shall take such actions, independently and in conjunction with financial institutions offering Clean Energy Victory Bonds, to promote the purchase of Clean Energy Victory Bonds, including campaigns describing the financial and social benefits of purchasing Clean Energy Victory Bonds. (2) Promotional Activities For purposes of paragraph (1), promotional activities may include advertisements, pamphlets, or other promotional materials— (A) in periodicals; (B) on billboards and other outdoor venues; (C) on television; (D) on radio; (E) on the internet; (F) within financial institutions