I think that you are confusing how much liquor you can bring back duty-free with how much you can actually pack, declare on arrival, and then pay duty on based upon alcohol content.
On a related note, I have seen people on cruises buy cases and cases of duty-free liquor in ports in the Caribbean. They ask, "How many can I buy?" And they get the truth, "As many as you want." What they should be asking is "How many can I get off the ship and into the US without paying duty on them?" When the Customs people in the US port see them, they are in for a big surprise. Hard to hide cases of rum and scotch and tequila in your carry-on bag. What is funny, they don't even try. I have heard them telling Customs that they asked how many they could buy. Alas, wrong question. Then they have a choice. Pay duty, or discard everything beyond a liter of liquor per adult (5 liters per adult if you bought at least 4 of them in a US insular possession such as the US Virgin Islands). The full explanation is here: [help.cbp.gov]
On a related note, I have seen people on cruises buy cases and cases of duty-free liquor in ports in the Caribbean. They ask, "How many can I buy?" And they get the truth, "As many as you want." What they should be asking is "How many can I get off the ship and into the US without paying duty on them?" When the Customs people in the US port see them, they are in for a big surprise. Hard to hide cases of rum and scotch and tequila in your carry-on bag. What is funny, they don't even try. I have heard them telling Customs that they asked how many they could buy. Alas, wrong question. Then they have a choice. Pay duty, or discard everything beyond a liter of liquor per adult (5 liters per adult if you bought at least 4 of them in a US insular possession such as the US Virgin Islands). The full explanation is here: [help.cbp.gov]
@sandyf wrote:
From an international location, there is a limit to how many bottles you can transport to the US. It used to be 2 per adult as I recall, checked. .
Shopping South Jersey, Southeast Pennsylvania, and Delaware above the canal since 2008