The purposes of this Act are—
(1)
to approve and implement the trade agreements negotiated under the Trade Act of 1974 [19 U.S.C. 2101 et seq.];
(2)
to foster the growth and maintenance of an open world trading system;
(3)
to expand opportunities for the commerce of the United States in international trade; and
(4)
to improve the rules of international trade and to provide for the enforcement of such rules, and for other purposes.