Question not identified.

Whether the Federal Energy Regulatory Commission must make a case-specific determination regarding the significance of greenhouse-gas emissions under the National Environmental Policy Act when the agency has prepared a detailed environmental impact statement disclosing and contextualizing such emissions, and whether the Commission acted arbitrarily in applying the Natural Gas Act's public-convenience-and-necessity standard by not adequately explaining its rejection of competing market-need studies and its consideration of long-term utility contracts and state energy-reduction requirements