1. Short title This Act may be cited as the Agricultural Trade Improvement Act of 2018 . 2. Definitions (a) Core seasonal industry Section 771 of the Tariff Act of 1930 ( 19 U.S.C. 1677 ) is amended by adding at the end the following: (37) Core seasonal industry The term core seasonal industry means the producers— (A) of a domestic like product that is a raw agricultural product, (B) whose collective output of the domestic like product constitutes a majority of the total production of the domestic like product in any State or group of States that accounts for a major portion of the total production of the domestic like product during any discrete season or cyclical period of time that concludes not later than 8 weeks after the date in which the product is harvested, and (C) that make substantially all of their sales of the domestic like product during the season or cyclical period of time described in subparagraph (B). . (b) Industry Section 771 of the Tariff Act of 1930(4)(A) ( 19 U.S.C. 1677(4)(A) ) is amended— (1) by striking industry means the producers and inserting the following: “‘industry’ means— (i) the producers ; (2) by striking the end period and inserting , or ; and (3) by adding at the end the following: (ii) a core seasonal industry. . (c) Interested party Section 771 of the Tariff Act of 1930(9)(E) ( 19 U.S.C. 1677(9)(E) ) is amended— (1) by striking association a majority and inserting the following: “association— (i) except as provided in clause (ii), a majority ; and (2) by inserting or after States,