Yes, the United States Postal Service (USPS) is expected to deliver packages on Christmas Eve, 2023. In the United States, USPS delivers packages on Saturdays as well as during the holidays, including Christmas Eve and Christmas Day. However, it's important to note that delivery times may be slower during this time, so it's best to place your orders as early as possible. Additionally, delivery times may vary depending on the location and volume of packages being delivered, so it's best to check the USPS website or contact your local post office for the most up-to-date information.