The U.S. Trade Representative has set the date when the additional duties will go into effect for List #4 as follows:
For goods covered by List #4A: 10% additional duty will apply to goods entered or withdrawn from warehouse for consumption on or after 12:01 a.m. on September 1, 2019.
For goods covered by List #4B: 10% additional duty will apply to goods entered or withdrawn from warehouse for consumption on or after 12:01 a.m. on December 15, 2019.
Thus, if goods are on the water, or in the process of being shipped, but they will not arrive until September 1, 2019 or after (List # 4A), or December 15, 2019 or after (List # 4B), they will be subject to sanctions and the additional duty will apply.
Goods in List # 4A must be classified under HTS#9903.88.15.
Goods in List # 4B must be classified under HTS#9903.88.16.
