In lieu of or in combination with appropriations of budget authority to cover the costs of direct loans and loan guarantees as required under section
661c
(b)(1) of title
2, the Secretary may accept on behalf of an applicant for assistance under this section a commitment from a non-Federal source to fund in whole or in part credit risk premiums with respect to the loan that is the subject of the application. In no event shall the aggregate of appropriations of budget authority and credit risk premiums described in this paragraph with respect to a direct loan or loan guarantee be less than the cost of that direct loan or loan guarantee.