19 U.S.C. § 2502

(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.