In 2006 Congress recognised the need for international cooperation to address some of the most significant issues affecting international fisheries today: illegal, unreported, and unregulated (IUU) fishing and fishing practices that may undermine the sustainability of living marine resources. In 2010, Congress focused on the need for enhanced international action to conserve and protect sharks in passing the Shark Conservation Act. By requirement, the Secretary of Commerce, in biennial reports, is to identify nations whose fishing vessels are engaged in certain IUU fishing, bycatch, and shark fishing practices; describe U.S. consultations with the identified countries to urge appropriate actions; and certify whether such actions subsequent to identification have adequately addressed the offending activities. The Secretary of Commerce has delegated authority to identify and certify countries under the Moratorium Protection Act to the NOAA Assistant Administrator for Fisheries. The Secretary of Commerce is also directed, in consultation with the Secretary of State and in cooperation with relevant regional fishery management councils and any relevant advisory committees, to take certain actions to improve the effectiveness of international fishery management organizations in conserving and managing stocks under their jurisdiction. This book surveys efforts by the United States to strengthen its leadership toward improving international fisheries management and enforcement, particularly with regard to IUU fishing, bycatch of protected living marine resources (PLMRs), and certain shark fishing practices. Furthermore, this book covers issues that have been identified during congressional hearings and in legislation introduced during the last three Congresses, some of which include the flexibility in rebuilding overfished fisheries; annual catch limits; uncertainty and data needs; catch shares (limited access privilege programs); management process and decision making; bycatch; and environmental quality.