1988—Subsec. (a). Pub. L. 100–647 substituted “paragraph (7)” for “paragraph (6)” in pars. (1) and (2).

Amendment by Pub. L. 100–647 effective, except as otherwise provided, as if included in the provision of the Tax Reform Act of 1986, Pub. L. 99–514, to which such amendment relates, see section 1019(a) of Pub. L. 100–647, set out as a note under section 1 of this title.

Section applicable to taxable years ending after July 18, 1984, and applicable to obligations issued after Sept. 3, 1982, and acquired after Mar. 1, 1984, see section 44 of Pub. L. 98–369, set out as a note under section 1271 of this title.