Import Security and Fairness Act

This bill modifies the $800 de minimis exemption for small shipments entering the U.S. duty-free. It excludes goods from nonmarket economy countries and nations on the U.S. trade "priority watchlist" from this exemption. Importers must submit detailed documentation (including origin, value, shipper details, and classification) to U.S. Customs within 180 days of enactment. Providing false information could result in $5,000 civil penalties per violation. The changes apply to shipments entered on or after 180 days after the bill’s enactment.