1989—Subsecs. (a), (b)(1), (c) to (e). Pub. L. 101–239 substituted “Internal Revenue Code of 1986” for “Internal Revenue Code of 1954”, which for purposes of codification was translated as “title 26” thus requiring no change in text.

1987—Subsec. (d). Pub. L. 100–203 inserted after second sentence “The determination of the Secretary of the Treasury shall not be prima facie evidence on issues relating solely to part 4 of subtitle B of subchapter I.”

Amendment by Pub. L. 101–239 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 7891(f) of Pub. L. 101–239, set out as a note under section 1002 of this title.