GS1 US has been working with the U.S. Customs and Border Protection Agency (CBP) on the Global Business Identifier (GBI) Initiative, which aims to potentially replace the CBP Manufacturer Identifier Code (MID) with a more accurate and efficient identifier(s).
CBP is looking for brokers, self-filers, and forwarders to sign up for the Evaluative Proof of Concept (EPoC) to test different types of identifiers. Those entities required to use a GS1 Global Location Number (GLN) include manufacturer/producer or shipper/seller, which is essentially any entity that must be identified on U.S. Customs entry form.
Below lists the current product categories and countries for the EPoC. There is a potential to have other countries and categories added, if requested to CBP.