In this final rule, NMFS specifies a 2019 limit of 2,000 metric tons (t) of longline-caught bigeye tuna for each U.S. Pacific territory (American Samoa, Guam, and the Commonwealth of the Northern Mariana Islands (CNMI)). NMFS will allow each territory to allocate up to 1,000 t each year to U.S. longline fishing vessels in a valid specified fishing agreement. As an accountability measure, NMFS will monitor, attribute, and (if necessary) restrict catches of longline- caught bigeye tuna, including catches made under a specified fishing agreement. These catch limits and accountability measures support the long-term sustainability of fishery resources of the U.S. Pacific Islands.