Within 6 months after receipt of a list under subsection (a) of this section or, in the case of a list submitted in connection with a trade agreement, within 90 days after receipt of such list, the Commission shall advise the President, with respect to each article or nontariff matter, of its judgment as to the probable economic effect of modification of the tariff or nontariff measure on industries producing like or directly competitive articles and on consumers, so as to assist the President in making an informed judgment as to the impact which might be caused by such modifications on United States interests, such as sectors involved in manufacturing, agriculture, mining, fishing, services, intellectual property, investment, labor, and consumers. Such advice may include in the case of any article the advice of the Commission as to whether any reduction in the rate of duty should take place over a longer period of time than the minimum period provided for in section
3803
(a)(3)(A) of this title.