(ii) Not later than 30 days after receiving such a request for consultations, the Trade Representative shall consult with representatives of the State concerned regarding the matter.  If the consultations involve the laws of a large number of States, the Trade Representative may consult with an appropriate group of representatives of the States concerned, as determined by those States.

(iii) The Trade Representative shall make every effort to ensure that the State concerned is involved in the development of the position of the United States at each stage of the consultations and each subsequent stage of dispute settlement proceedings regarding the matter.  In particular, the Trade Representative shall-

(I) notify the State concerned not later than 7 days after a WTO member requests the establishment of a dispute settlement panel or gives notice of the WTO member’s decision to appeal a report by a dispute settlement panel regarding the matter; and

(II) provide the State concerned with the opportunity to advise and assist the Trade Representative in the preparation of factual information and argumentation for any written or oral presentations by the United States in consultations or in proceedings of a panel or the Appellate Body regarding the matter.

(iv) If a dispute settlement panel or the Appellate Body finds that the law of a State is inconsistent with any of the Uruguay Round Agreements, the Trade Representative shall consult with the State concerned in an effort to develop a mutually agreeable response to the report of the panel or the Appellate Body and shall make every effort to ensure that the State concerned is involved in the development of the United States position regarding the response.

(D) Notice to States Regarding Consultations on Foreign Subcentral Government Laws.

(i) Subject to clause (ii), the Trade Representative shall, at least 30 days before making a request for consultations under Article 4 of the Dispute Settlement Understanding regarding a subcentral government measure of another WTO member, notify, and solicit the views of, appropriate representatives of each State regarding the matter.

(ii) In exigent circumstances clause (i) shall not apply, in which case the Trade Representative shall notify the appropriate representatives of each State not later than 3 days after making the request for consultations referred to in clause (i).

(2) Legal Challenge.

(A) In General.  No State law, or the application of such a State law, may be declared invalid as to any person or circumstance on the ground that the provision or application is inconsistent with any of the Uruguay Round Agreements, except in an action brought by the United States for the purpose of declaring such law or application invalid.

(B) Procedures Governing Action.  In any action described in subparagraph (A) that is brought by the United States against a State or any subdivision thereof