Yes, you can absolutely bring olive oil back from France to the United States in 2026, as it is considered a processed vegetable product and is generally admissible. There are no limits on the quantity for personal use, provided it is not for resale. However, you must declare it on your Customs Declaration form. The biggest challenge is not customs, but TSA and packing. Because it is a liquid, you cannot bring large bottles of olive oil in your carry-on; they must be in your checked luggage. To prevent a "laundry disaster," it is highly recommended to buy oil in tin cans rather than glass bottles, or to use "wine wings" (padded, leak-proof bags) to wrap the bottles. In 2026, while customs duties on olive oil for personal use are non-existent, failing to declare it can lead to a secondary inspection, so always be transparent with the CBP officer about your "liquid gold" souvenirs.