USA Unpacking law
It appears there might be a misunderstanding regarding the term "USA Unpacking law." As of my last knowledge update in January 2022, there is no specific federal law in the United States explicitly referred to as the "Unpacking Law." It's possible that the term could be related to a specific context, industry, or recent developments that have occurred after my last update. If you have a specific area or context in mind related to unpacking, such as shipping and delivery regulations, consumer protection laws, or any other specific aspect, please provide more details or clarify. This will help me offer more accurate and relevant information based on your inquiry.