1999—Subsecs. (b) to (f). Pub. L. 106–102 added subsec. (b) and redesignated former subsecs. (b) to (e) as (c) to (f), respectively.
1996—Subsec. (e). Pub. L. 104–290 added subsec. (e).
1987—Subsec. (b). Pub. L. 100–181, § 618, substituted “intended” for “intend”.
Subsec. (c). Pub. L. 100–181, § 619, substituted “contract or agreement” for “contract of agreement”.
1970—Subsecs. (b) to (d). Pub. L. 91–547 added subsec. (b), redesignated former subsec. (b) as (c), struck out “at the effective date of this subchapter” before “comply”, substituted “contract of agreement” for “contract or agreement”, and redesignated former subsec. (c) as (d).
Amendment by Pub. L. 106–102 effective 18 months after 
Amendment by Pub. L. 91–547 effective 
For transfer of functions of Securities and Exchange Commission, with certain exceptions, to Chairman of such Commission, see Reorg. Plan No. 10 of 1950, §§ 1, 2, eff.