; (ii) is made for an original term of 20 years or for an original term determined by the Secretary to be necessary to develop liquidity for securities backed by covered mortgage loans and expand Program participation by eligible homebuyers; (iii) subject to subparagraph (C) of this paragraph and notwithstanding section 203(b)(2)(C) of the National Housing Act ( 12 U.S.C. 1709(b)(2)(C) ), has a mortgage insurance premium of not more than 4 percent of the loan balance that is paid at closing, financed into the principal balance of the loan, paid through an annual premium, or a combination thereof; (iv) involves a rate of interest that is fixed over the term of the mortgage loan; and (v) is secured by a single-family residence that is the principal residence of an eligible homebuyer. (B) The term covered mortgage loan means, for purposes of the Program established by the Secretary of Agriculture, a loan guaranteed under section 502(h) of the Housing Act of 1949 ( 42 U.S.C. 1472(h) ) that— (i) notwithstanding section 502(h)(7)(A) of the Housing Act of 1949 ( 42 U.S.C. 1472(h)(7)(A) ), is made for an original term of 20 years or for an original term determined by the Secretary to be necessary to develop liquidity for securities backed by covered mortgage loans and expand Program participation by eligible homebuyers