Antidumping and countervailing duties (AD/CVD) are not ordinary customs tariffs and are not in the HTS. Although the USITC has a role in AD/CVD investigations (https://www.usitc.gov/investigations/import_injury), the International Trade Administration (ITA) of the Department of Commerce sets the rates of these additional duties in AD/CVD orders.

CBP maintains a public database of many (but not all) instructions implementing AD/CVD orders at: https://aceservices.cbp.dhs.gov/adcvdweb. These instructions contain information on rates of duty and contact information at the ITA for further information. Questions about the scope of AD/CVD orders should be referred to the contacts in the instructions or to "Contact Enforcement and Compliance" at https://www.trade.gov/enforcement/operations.

The two sites linked below can be used to find the Department of Commerce AD/CVD case number.

• A report of AD/CVD orders in effect on the date of update can be found using the ITA Listing of AD/CVD Orders
• For recent or ongoing investigations, see https://www.usitc.gov/investigations/import_injury