; (B) methane; (C) nitrous oxide; (D) hydrofluorocarbons; (E) perfluorocarbons; (F) sulfur hexafluoride; or (G) any other anthropogenically emitted gas that is determined by the Administrator, by regulation, to contribute to global warming to a non-negligible degree. (3) The term new electric utility steam generating unit means an electric utility steam generating unit that commences operations or otherwise becomes a new source (as defined in section 111(a)) on or after the date of enactment of this section. . (b) Prohibition (1) Prohibition Notwithstanding any other provision of law, the Federal Energy Regulatory Commission may not— (A) approve an application for the siting, construction, expansion, or operation of an LNG terminal under section 3(e) of the Natural Gas Act ( 15 U.S.C. 717b ); or (B) issue a certificate of public convenience and necessity under section 7 of such Act ( 15 U.S.C. 717f ). (2) Exception (A) In general Paragraph (1) shall not apply with respect to an application or certificate that, if approved or issued, will result in a reduction in emissions of any greenhouse gas at the LNG terminal, as determined by the Commission. (B) Definition In this section, the term greenhouse gas means— (i) carbon dioxide; (ii) methane; (iii) nitrous oxide; (iv) hydrofluorocarbons; (v) perfluorocarbons; (vi) sulfur hexafluoride