Dear Dr. Andrei:Thank you for writing to me in opposition to efforts that would curtail the U.S. Environmental Protection Agency’s (EPA) authority to enforce the Clean Air Act. I have proudly fought against such efforts, and I appreciate hearing from you.As your Senator and Chairman of the Senate Environment and Public Works Committee, I am determined to protect our nation’s landmark environmental laws and the ability of our federal agencies to enforce those laws.The EPA’s finding that greenhouse gases threaten public health and well-being is based upon years of work by America’s leading scientists and public health experts. Limiting EPA’s authority to enforce the Clean Air Act would increase our dependence on oil, set a dangerous precedent that would undermine EPA’s ability to protect children and families from pollution, jeopardize clean energy jobs across the country, and stall efforts to build a clean energy economy.Please know that I will keep working to uphold the Clean Air Act and fully support EPA as it takes necessary action to reduce the dangerous carbon pollution that causes climate change. I will also continue my efforts to curb greenhouse gas emissions, promote clean energy, and create millions of new jobs.Again, thank you for writing to me. Please feel free to write to me in the future about this or any other issue of concern to you.