An antidumping duty investigation shall be initiated whenever the administering authority determines, from information available to it, that a formal investigation is warranted into the question of whether the elements necessary for the imposition of a duty under section 1673 of this title exist.
If during the period of monitoring referred to in subparagraph (A), the administering authority determines that there is sufficient information to initiate a formal investigation under this subsection regarding an additional supplier country, the administering authority shall immediately initiate such an investigation.
For purposes of this paragraph, the term “additional supplier country” means a country regarding which no antidumping investigation is currently pending, and no antidumping duty order is currently in effect, with respect to imports of the class or kind of merchandise covered by subparagraph (A).
An antidumping proceeding shall be initiated whenever an interested party described in subparagraph (C), (D), (E), (F), or (G) of section 1677(9) of this title files a petition with the administering authority, on behalf of an industry, which alleges the elements necessary for the imposition of the duty imposed by section 1673 of this title, and which is accompanied by information reasonably available to the petitioner supporting those allegations. The petition may be amended at such time, and upon such conditions, as the administering authority and the Commission may permit.
The petitioner shall file a copy of the petition with the Commission on the same day as it is filed with the administering authority.
Upon receipt of a petition filed under paragraph (1), the administering authority shall notify the government of any exporting country named in the petition by delivering a public version of the petition to an appropriate representative of such country.
The administering authority shall not accept any unsolicited oral or written communication from any person other than an interested party described in section 1677(9)(C), (D), (E), (F), or (G) of this title before the administering authority makes its decision whether to initiate an investigation, except as provided in subsection (c)(4)(D), and except for inquiries regarding the status of the administering authority’s consideration of the petition.
In any case in which the administering authority is required to poll or otherwise determine support for the petition by the industry under paragraph (4)(D), the administering authority may, in exceptional circumstances, apply subparagraph (A) by substituting “a maximum of 40 days” for “20 days”.
If the determinations under clauses (i) and (ii) of paragraph (1)(A) are affirmative, the administering authority shall initiate an investigation to determine whether the subject merchandise is being, or is likely to be, sold in the United States at less than its fair value.
If the determination under clause (i) or (ii) of paragraph (1)(A) is negative, the administering authority shall dismiss the petition, terminate the proceeding, and notify the petitioner in writing of the reasons for the determination.
In determining industry support under subparagraph (A), the administering authority shall disregard the position of domestic producers who oppose the petition, if such producers are related to foreign producers, as defined in section 1677(4)(B)(ii) of this title, unless such domestic producers demonstrate that their interests as domestic producers would be adversely affected by the imposition of an antidumping duty order.
If the petition alleges the industry is a regional industry, the administering authority shall determine whether the petition has been filed by or on behalf of the industry by applying subparagraph (A) on the basis of production in the region.
Before the administering authority makes a determination with respect to initiating an investigation, any person who would qualify as an interested party under section 1677(9) of this title if an investigation were initiated, may submit comments or information on the issue of industry support. After the administering authority makes a determination with respect to initiating an investigation, the determination regarding industry support shall not be reconsidered.
For purposes of this subsection, the term “domestic producers or workers” means those interested parties who are eligible to file a petition under subsection (b)(1).