Pub. L. 87-794, tit. II, ch. 5, sec. 243
CONGRESSIONAL DELEGATES TO NEGOTIATIONS.
SEC 243. CONGRESSIONAL DELEGATES TO NEGOTIATIONS. Before each negotiation under this title, the President shall, upon the recommendation of the Speaker of the House of Representatives, select two members (not of the same political party) of the Committee on Ways and Means, and shall, upon the recommendation of the President of the Senate, select two members (not of the same political party) of the Committee on Finance, who shall be accredited as members of the United States delegation to such negotiation.