19 CFR Parts 4, 12, 18, et al.: Importer Security Filing and Additional Carrier Requirements; Final Rule [open pdf - 326KB]
"To help prevent terrorist weapons from being transported to the United States, vessel carriers bringing cargo to the United States are required to transmit certain information to Customs and Border Protection (CBP) about the cargo they are transporting prior to lading that cargo at foreign ports of entry. This interim final rule requires both importers and carriers to submit additional information pertaining to cargo to CBP before the cargo is brought into the United States by vessel. This information must be submitted to CBP by way of a CBP-approved electronic data interchange system. The required information is reasonably necessary to improve CBP's ability to identify high-risk shipments so as to prevent smuggling and ensure cargo safety and security. These regulations specifically fulfill the requirements of section 203 of the Security and Accountability for Every (SAFE) Port Act of 2006 and section 343(a) of the Trade Act of 2002, as amended by the Maritime Transportation Security Act of 2002."
Government Printing Office: http://www.gpoaccess.gov/
Federal Register (November 25, 2008), v.73 no.228