the same as that of a secured loan. (B) Terms The terms of a loan guarantee provided under this paragraph shall be consistent with the terms established in this section for a secured loan, except that the rate on the guaranteed loan and any prepayment features shall be negotiated between the entity and the lender, with the consent of the Secretary. (6) Limitation No project receiving Federal credit assistance under this section may be financed (directly or indirectly), in whole or in part, with proceeds of any obligation— (A) the interest on which is exempt from the tax imposed under chapter 1 of the Internal Revenue Code of 1986