; and (4) pursuing plurilateral agreements that are not subject to unconditional MFN will enable the United States to work with like-minded countries within the framework of the WTO to develop new rules to discipline discriminatory, trade distorting, and non-market practices, restore the relevance of the multilateral trading system, and expand trade to the benefit of the citizens of the United States. 3. Briefing on plurilateral agreements with benefits applying only to signatories of those agreements (a) In general Not later than 120 days after the date of the enactment of this Act, the United States Trade Representative shall provide to the Committee on Finance of the Senate and the Committee on Ways and Means of the House of Representatives a classified briefing on the feasibility and advisability of pursuing and adopting covered plurilateral trade agreements. (b) Elements The briefing required under subsection (a) shall include a discussion of the opportunities, obstacles, feasibility, and advisability of negotiating and adopting covered plurilateral trade agreements. (c) Definitions In this section: (1) Covered plurilateral trade agreement The term covered plurilateral trade agreement means a sector-specific agreement within the framework of the World Trade Organization involving foreign countries or foreign territories that form a subset of the members of the World Trade Organization that does not extend benefits on a most favored nation basis. (2) Most favored nation The term most favored nation , with respect to requirements relating to a trade agreement, means requirements under the World Trade Organization for nondiscriminatory trade treatment among all parties to the agreement. 4. Negotiating and trade agreements authority for certain plurilateral agreements with benefits applying only to signatories of those agreements (a) Initiation of negotiations (1) In general In order to enhance the economic well-being of the United States, the President shall initiate negotiations for a covered plurilateral