U.S. Climate Action Under the Clean Air Act

July 2015

This brief by Climate Advisers and Sierra Club provides a balanced assessment of the risks and challenges facing the Obama administration as it seeks to mitigate climate change using the Clean Air Act. It outlines the CAA and its applications for regulating domestic greenhouse gas emissions, summarizes the likely challenges the administration will face in the coming years, and provides political analysis on the extent to which the United States will sustain its recent climate progress after the election of a new President and Congress in late 2016.