321 de minimis
De minimis is a policy described in Section 321, 19 USC 1321. It allows the import of articles duty and tax free, provided their aggregate fair retail value does not exceed $800 in the country from which the articles are imported. Additionally, the articles must be imported by only one person on one day. The previous de minimis threshold was $200, but the Trade Facilitation and Trade Enforcement Act increased it to $800.