On November 7, 2019 the recent additions to the Harmonized Tariff Schedule (HTS) were available in the Automated Export System (AES).
The 2019 Schedule B and HTS tables are available for downloading here.
The current list of HTS codes that are not valid for AES are available here.
For further information or questions, contact the U.S. Census Bureau’s International Trade Indicator Micro Analysis Branch:
Telephone: (800) 549-0595, select option 2 for International Trade Indicator Micro Analysis Branch
Sign up for email updates from Census: https://public.govdelivery.com/accounts/USCENSUS/subscriber/new