NMFS proposes amendments to regulations implementing seafood import restrictions under the authority of the High Seas Driftnet Fishing Moratorium Protection Act (16 U.S.C. 1826d-k), the Marine Mammal Protection Act (16 U.S.C. 1361 et seq.) or the Magnuson-Stevens Fishery Conservation and Management Act (16 U.S.C. 1801 et seq.). These statutes have provisions that authorize the Agency to impose import restrictions against nations or its flag vessels for fish products that are unlawfully or unsustainably acquired, including those that are harvested by fishing methods that have bycatch of protected living marine resources in excess of United States standards.  The statutes allow for imposition of trade measures against specific fisheries or specific vessels as well as those applied to the nation as a whole.  In such cases of targeted import restrictions, NMFS requires Certification of Admissibility whereby exporting government officials must validate that individual seafood shipments are not subject to an embargo. In application of the Certification of Admissibility program to date, NMFS has observed a number of enforcement concerns.  To facilitate enforcement and ensure that exporters and importers do not circumvent lawfully applied trade restrictions, NMFS is proposing to amend the import permitting requirements, the reporting and recordkeeping requirements, and entry filing requirements.  In addition, NMFS proposes to include provisions to revoke the Certification of Admissibility if exporting nation officials do not exercise due diligence in documenting the origin of fishery products shipped to the United States.