To modify the procedures for investigating claims of evasion of antidumping and countervailing duty orders.

HR 6446 modifies how U.S. customs officials investigate suspected evasion of antidumping and countervailing duty orders on imported goods. It allows the Commissioner to start an investigation independently if they have evidence of evasion, not just when a complaint is filed. Additionally, importers found to have evaded duties must pay all owed customs fees before they can challenge the decision in court. These changes streamline enforcement and clarify the process for addressing duty evasion.