; (B) by striking 25 percent and inserting 10 percent ; (C) by striking , and and inserting a period; and (D) by striking clause (ii); (2) by striking subparagraph (D); and (3) by redesignating subparagraph (E) as subparagraph (D). (b) Antidumping duty investigations Section 732(c)(4) of the Tariff Act of 1930 ( 19 U.S.C. 1673a(c)(4) ) is amended— (1) in subparagraph (A)— (A) by striking , if and all that follows through (i) the and inserting , if the ; (B) by striking , and and inserting a period; and (C) by striking clause (ii); (2) by striking subparagraph (D); and (3) by redesignating subparagraph (E) as subparagraph (D). (c) Effective date The amendments made by this section take effect on the date of the enactment of this Act and apply with respect to countervailing duty investigations under subtitle A of title VII of the Tariff Act of 1930 and antidumping duty investigations under subtitle B of title VII of the Tariff Act of 1930 that are initiated on or after the date that is 90 days after such date of enactment. 4. Authority of ITC to issue trade enforcement advisory opinions Section 332 of the Tariff Act of 1930 ( 19 U.S.C. 1332 ) is amended by adding at the end the following: (h) Trade enforcement advisory opinions (1) In general A United States business enterprise may file a detailed petition with the appropriate congressional committees for purposes of requesting the Commission to determine whether or not a foreign country has violated its obligations under any trade agreement to which the United States is a party with respect to trade in goods or services of an industry in which the United States business enterprise is located. (2) Review by committees The appropriate congressional committees shall— (A) review a petition filed under paragraph (1)