This bill amends the Trade Facilitation and Trade Enforcement Act of 2015 to significantly expand the period for calculating interest on antidumping and countervailing duties. It changes the start date for considering interest on duties collected by U.S. Customs and Border Protection from October 1, 2014, to October 1, 2000 , thereby including an additional 14 years of accrued interest for potential distribution. The legislation mandates a special distribution of all interest realized under this expanded timeframe for fiscal years ending before the bill's enactment. To be eligible, persons must have previously received at least one payment under the Continued Dumping and Subsidy Offset Act of 2000 (CDSOA), timely file a certification, and meet the original CDSOA eligibility criteria. This interest will be aggregated by duty order and distributed pro rata to eligible recipients in two phases. Interest realized from October 1, 2010, onwards will be distributed within 210 days of enactment, with interest from October 1, 2000, to September 30, 2010, distributed within 210 days after the first phase.