FDA and CBP seized 4.7 million unauthorized e-cigarette units (U.S.$86.5 million) in the largest single operation of its kind. Nearly all shipments originated from China and used misleading descriptions or undervalued invoices to try to avoid regulatory scrutiny and import duties. All seized products lacked the mandatory premarket authorization from the FDA, making them illegal to market or distribute in the United States. So far this year, FDA and CBP have blocked over 6 million unauthorized e?cigarette units worth more than U.S.$120 million from entering the U.S. supply chain.