In other words, some people don't like measuring the benefits of climate change mitigation:
Senate Republicans are criticizing the Obama administration for using what they see as an opaque, secretive process to calculate the costs associated with climate change.
Led by Environment and Public Works Committee Chairman Jim Inhofe (R-Okla.), 11 senators wrote to the White House Office of Information and Regulatory Affairs (OIRA) Monday to investigate the administration’s social cost of carbon.
The administration uses social cost of carbon to calculate the societal benefits of regulations that reduce greenhouse gas emissions that are believed to cause climate change.The Obama administration currently pegs the cost of carbon emissions — and the benefit of reducing them — at $37 per ton.
“Congress and the American people deserve greater transparency and government accountability regarding the social cost of carbon — a theoretical measure of climate change damages the administration uses to justify onerous regulations,” the senators wrote.
via thehill.com
After reading the letter it turns out that the Senators mostly want to be privy to the public comments, but greater transparency on where the SCC came from can be found here, here and here.