; (4) evaluate the percentage of United States seafood imports originating from High Seas fishing, from both legally reported and IUU fishing; and (5) evaluate the greenhouse gas emissions associated with the high seas fishing and high seas fishing fleets. (b) Elements The study and evaluation conducted pursuant to the agreement entered into under subsection (a) shall address— (1) the feasibility of implementing a global moratorium on high seas commercial fishing, including— (A) legal authorities that exist under the United Nations Convention on the Law of the Sea and other implementation instruments to implement a moratorium on high seas commercial fishing; (B) the nations and vessels likely to refuse or otherwise fail to comply with such a moratorium, including estimates of catch levels by those nations and vessels relative to overall international catch; and (C) available enforcement mechanisms and surveillance technology that could be used to enforce such a moratorium; and (2) the range of effects that would be expected to result from a moratorium on high seas commercial fishing, including— (A) identification of fish stocks that would be affected, changes in exploitation of those stocks, and net effect on the biomass of those stocks; (B) ecosystem effects on non-target species, including marketable and non-marketable bycatch, forage species, corals, other invertebrates, marine mammals, and sea turtles; (C) changes in global carbon emissions from reduced fishing vessel transits and from increased fish carbon capture and improved high seas ecosystem functioning; (D) amounts of subsidies that support high seas commercial fishing by the top 12 nations that currently conduct high seas fishing by volume; (E) effects on global fisheries revenues and profits overall and the effects on fisheries revenues and profits for developing nations; (F) effects on seafood availability for United States consumers; (G) effects on revenues and profits for domestic fishermen