for insuring such loans, the Secretary shall utilize the Agricultural Credit Insurance Fund subject to all the provisions of section 1929 of title 7 and the second and third sentences of section 1928 1 1 See References in Text note below. of title 7, including the authority in section 1929(f)(1) 1 of title 7 to utilize the insurance fund to make, sell, and insure loans which could be insured under this subsection; but the aggregate of the principal amounts of such loans made by the Secretary and not disposed of shall not exceed $10,000,000 outstanding at any one time; and the Secretary may take liens running to the United States though the notes may be held by other lenders;