1986—
Pub. L. 99–646, § 64(b), Nov. 10, 1986,
100 Stat. 3614, added item 1793.
1984—
Pub. L. 98–473, title II, § 1109(c), Oct. 12, 1984,
98 Stat. 2148, amended analysis generally by revising items 1791 and 1792, and by inserting a second chapter heading which was not executed to text as redundant.