哈佛大学环境中心主任、向奥巴马提供气候变化咨询的总统科学委员会成员施拉格（Daniel Schrag）指出 ： “ 政治上，白宫对向煤宣战还有所顾忌。
According to Daniel Schrag, Director of Harvard University’s Center for the Environment and a member of a presidential science panel that has helped to advise Obama on climate change, “Politically, the White House is hesitant to say they’re having a war on coal.