Section, Pub. L. 87-128, title III, Sec. 328, as added Pub. L. 92-173, Nov. 24, 1971, 85 Stat. 491; amended Pub. L. 93-24, Sec. 5, Apr. 20, 1973, 87 Stat. 25; Pub. L. 95-334, title I, Sec. 109(b), Aug. 4, 1978, 92 Stat. 423, related to insurance of loans