An environmental official suggesting he worked for Organizing for Action, the Obama administration’s advocacy group, sent a memo to supporters and pro-Obama pundits, warning them to avoid using “economic arguments” to defend the president’s new climate change, which could put a damper on coal plants and the Keystone Pipeline project.

Ken Berlin, general counsel to the Coalition for a Green Capital and a former chairman of the Obama campaign’s Energy and Environment Team, also warned people to not “over promise on the impacts taking action will have.”