CIT sustains Commerce's second remand redetermination in light-walled rectangular pipe and tube review from Mexico

The U.S. Court of International Trade sustained Commerce's Second Remand Redetermination in the 2020-2021 administrative review of the antidumping duty order on light-walled rectangular pipe and tube from Mexico, in which Commerce replaced the Cohen's d test with a new price difference test after the CAFC's decision in Marmen III. The revised analysis produced weighted-average dumping margins of 10.67% for Maquilacero S.A. de C.V. and Tecnicas de Fluidos S.A. de C.V. and 6.06% for non-selected parties such as Perfiles LM, S.A. de C.V., replacing the amended final results margins of 9.2% and 5.32%. The opinion is Slip Op. 26-111 in Consol. Court No. 23-00091, dated September 14, 2026.