1980—Subsec. (b). Pub. L. 96–477 provided that a contract whose terms violated this subchapter or any rule, regulation, or order thereunder would be unenforceable by either party or by a nonparty to the contract who acquired a right under such contract with knowledge of the facts by reason of which the making or performance of the contract would violate this subchapter, struck out provisions declaring such contracts void as regards the rights of the violators or nonparties to the contract with actual knowledge of its illegality, authorized the court to enforce such contracts where the court found that under the circumstances enforcement would produce a more equitable result than nonenforcement and such enforcement would not be inconsistent with the purposes of this subchapter, authorized the same two-part test to save from rescission any portions of such contracts which had been performed, and provided that subsec. (b) was not to apply to a lawful portion of a contract to the extent it could be severed from an unlawful portion of such contract, or to preclude recovery against any person for unjust enrichment.