But is the seller responsibility to inform US Customs as to country of origin or country of purchase.
When traveling in the past i do not ever remember being asked what country was the item made in.
While I agree with this, if you were to order a drone from another country, at this point the amount of tariff you would pay is dependent on whether the custom agent charges the tariff of the shipping country or the country of origin of the product.
Not really we import almost all of our hitech manufacturing machines, especially from the European Union. By the time someone built something to speck you are talking a long time, to say nothing of the tariffs on steel , aluminum and copper now...