This bill enacts substantial amendments to the South Pacific Tuna Act of 1988, primarily focusing on modernizing the framework for tuna fishing operations. It revises several key definitions, including those for "Closed Area," "Fishing," and "Fishing Vessel," specifically narrowing the latter to "commercial purse seine fishing for tuna." Furthermore, the bill significantly expands the list of prohibited acts , now including violations of regional terms and conditions or any authorized fishing effort/catch limits, while also repealing the previous section on exceptions. The legislation overhauls the licensing process , detailing conditions under which the Secretary may decline to forward a license application, such as bankruptcy or unpaid penalties. It also completely replaces the section on reporting requirements and disclosure of information , mandating strict confidentiality for certain data (e.g., observer data, Administrator-designated information) with specific, enumerated exceptions for enforcement, national security, or aggregated forms. Notably, the bill repeals the entire section concerning observers . Additional amendments update provisions related to criminal offenses, civil penalties, and enforcement procedures. The bill also broadens the scope of technical assistance that the Secretary and Secretary of State can provide to Pacific Island Parties, aiming to benefit them from fisheries resource development and vessel operations licensed under the Treaty, and streamlines procedures for additional fishing access agreements.