Extending nondiscriminatory treatment to the products of the Union of Soviet Socialist Republics : communication from the President of the United States transmitting a copy of a proclamation that extends nondiscriminatory treatment to the products of the Union of Soviet Socialist Republics; also enclosed is the text of the "agreement on trade relations between the government of the United States of America and the government of the Union of Soviet Socialist Republics," pursuant to 19 U.S.C. 2437(a)