For e-commerce supply chains, U.S. Customs and Border Protection (CBP) Section 321 has become both a lifeline and a regulatory headache for businesses, especially with the recent government actions enacted by the current administration. This rule, which allows low-value shipments under $800 to enter duty-free, was designed to streamline trade and reduce friction at ports. However, as volumes surge—driven by direct-to-consumer (DTC) sales and international fulfillment models—Section 321 compliance has become a critical challenge for customs brokers, logistics providers, and online retailers alike. From data accuracy issues to increased CBP scrutiny on de minimis shipments, businesses face new risks, including delays, denied entries, and enforcement actions. As regulatory oversight tightens, software solutions are stepping into bridge compliance gaps, mitigate risks, and create operational efficiencies. (....)