Changed circumstances reviews are made by the U.S. Department of Commerce and/or the USITC with respect to final affirmative determinations that resulted in a countervailing duty order or antidumping duty order. They also apply to suspension agreements that resulted from a countervailing duty or antidumping duty investigation. Commerce and the USITC conduct such reviews under section 751(b) of the Tariff Act of 1930 (19 U.S.C. § 1675(b)) on the basis of information or at the request of an interested party. The USITC's regulation regarding changed circumstances reviews can be found at 19 C.F.R. § 207.45.

In reviews involving a countervailing duty or antidumping duty order, the USITC must determine whether revocation of the order or finding is likely to lead to continuation or recurrence of material injury. In reviews involving a suspension agreement, the USITC must determine whether the suspension agreement continues to eliminate completely the injurious effects of imports of the subject merchandise.

For more information, see the USITC's  trade remedies handbook and Commerce's resource page.