Before entering into negotiations concerning any proposed foreign trade agreement under section
1351 of this title, the President shall furnish the United States International Trade Commission (hereinafter in sections
1352
(a), (c),
1354, and
1360 to
1367 of this title, and section
624
(b) of title
7, referred to as the “Commission”) with a list of all articles imported into the United States to be considered for possible modification of duties and other import restrictions, imposition of additional import restrictions, or continuance of existing customs or excise treatment. Upon receipt of such list the Commission shall make an investigation and report to the President the findings of the Commission with respect to each such article as to