Need. When you enter the United States, you should fill in the customs declaration form. No matter what food it is, you need to declare it according to law when you enter the United States. The declaration form of import and export goods refers to a legal document that the consignee or consignor of import and export goods or his agent makes a written statement on the actual situation of import and export goods in accordance with the format stipulated by the customs, so as to require the customs to go through customs clearance procedures for their goods in accordance with the applicable customs system. It has a very important legal status in foreign economic and trade activities. It is not only an important basis for customs supervision, taxation, statistics, inspection and investigation, but also an important certificate for verification of import and export goods in processing trade, export tax rebate and foreign exchange management. It is also an important document for the customs to handle illegal smuggling cases and the tax and foreign exchange administration departments to investigate and deal with tax fraud and arbitrage crimes.