In the USA, the CBP doesn't generally care where your merchandise was made (except for Cuba and a few other places).
They only care where you bought the merchandise.
If the total value of the goods you are bringing into the USA are over the limit, then they want their cut.
Some people who try to smuggle alcohol onto ships and have it confiscated (and returned to them on the last day of the cruise) are very dismayed to learn that they can be charged import duty on alcohol they purchased in the USA. They rarely remember to keep their receipts. And even if they have the receipts, they cannot prove that the alcohol they are carrying back into the USA is the exact same alcohol they claim to have purchased before their cruise.