Under President Barack Obama the U.S. Environmental Protection Agency has promulgated a series of greenhouse gas emissions regulations, initiating the necessary national response to climate change. However, the United States will need to find other ways to reduce GHG emissions if it is to live up to its international emissions reduction pledges, and to ultimately lead the way to a zero-carbon energy future. This paper argues that the success of the recent climate negotiations in Paris provides a strong basis for invoking a powerful tool available to help achieve the country's climate change goals: Section 115 of the Clean Air Act, titled “International Air Pollution.” This provision authorizes EPA to require states to address emissions that contribute to air pollution endangering public health or welfare in other countries, if the other countries provide the U.S. with reciprocal protections. The language of Section 115 does not limit the agency to regulating a particular source-type, or a given industrial or economic sector. Rather, it grants EPA and the states broad latitude to address international air pollution comprehensively through the Clean Air Act's State Implementation Plan process, increasing administrative efficiency and reducing burdens on regulated companies. EPA and the states could use the provision to establish an economy-wide, market-based approach for reducing GHG emissions. Such a program would provide one of the most effective and efficient means to address climate change pollution in the United States.

Editor Michael Burger brings together a comprehensive assessment of how one statutory provision – Section 115 of the Clean Air Act, “International Air Pollution” – provides the executive branch of the U.S. government with the authority, procedures, and mechanisms to work with the states and private sector to take national climate action.

The challenge before us is unprecedented. Global climate change demands a transformation of our entire economy and energy system within just a few short years in order to preserve a healthy natural world and a sustainable way of life for our children and grandchildren. The good news is that the technological solutions are well within reach. The bad news is that our system of democratic governance in the United States is so paralyzed that it may be incapable of meeting this challenge. Nevertheless, we already have some powerful tools that will enable us to make substantial progress toward a brighter future. The Clean Air Act is a broad federal statute consisting of many different programs and approaches. Among these are fair, effective, and flexible regulatory authorities that can be used right away to move technological solutions off the shelf and into common usage. In particular, under sections 111 and 202 of the Clean Air Act, the United States Environmental Protection Agency (EPA) has authority to directly regulate stationary and mobile sources on a sector-by-sector basis. This Article surveys the emission reduction strategies available in key industries and mobile source categories, and it concludes that EPA can quickly reduce emissions by approximately 24% using the sectoral approach. This will put us on the path toward the necessary 50% to 85% reductions overall, and it will allow us to keep moving forward while the more difficult transformation of our energy system is underway. A key advantage of the sectoral approach is its straightforward legal framework. With clear statutory guidelines, EPA's regulations are not likely to get caught up in protracted litigation. The sectoral approach also promotes fairness by ensuring a level playing field across each industry, and it promotes efficiency by focusing on outcomes and motivating industry to find innovative ways of achieving them. In short, this Article urges EPA to focus its attention on regulating greenhouse gas emissions on a sector-by-sector basis under the Clean Air Act. Moreover, in light of the urgency of the climate crisis, this Article also urges Congress to reject any legislative proposal that would strip EPA of these effective regulatory tools.

Legal Pathways to Deep Decarbonization in the United States provides a "legal playbook" for deep decarbonization in the United States, identifying well over 1,000 legal options for enabling the United States to address one of the greatest problems facing this country and the rest of humanity. The book is based on two reports by the Deep Decarbonization Pathways Project (DDPP) that explain technical and policy pathways for reducing U.S. greenhouse gas emissions by at least 80% from 1990 levels by 2050. This 80x50 target and similarly aggressive carbon abatement goals are often referred to as deep decarbonization, distinguished because it requires systemic changes to the energy economy. Legal Pathways explains the DDPP reports and then addresses in detail 35 different topics in as many chapters. These 35 chapters cover energy efficiency, conservation, and fuel switching; electricity decarbonization; fuel decarbonization; carbon capture and negative emissions; non-carbon dioxide climate pollutants; and a variety of cross-cutting issues. The legal options involve federal, state, and local law, as well as private governance. Authors were asked to include all options, even if they do not now seem politically realistic or likely, giving Legal Pathways not just immediate value, but also value over time. While both the scale and complexity of deep decarbonization are enormous, this book has a simple message: deep decarbonization is achievable in the United States using laws that exist or could be enacted. These legal tools can be used with significant economic, social, environmental, and national security benefits. Book Reviews "A growing chorus of Americans understand that climate change is the biggest public health, economic, and national security challenge our families have ever faced and they rightly ask, ''What can anyone do?'' Well, this book makes that answer very clear: we can do a lot as individuals, businesses, communities, cities, states, and the federal government to fight climate change. The legal pathways are many and the barriers are not insurmountable. In short, the time is now to dig deep and decarbonize." --Gina McCarthy, Former U.S. Environmental Protection Agency Administrator "Legal Pathways to Deep Decarbonization in the United States sets forth over 1,000 solutions for federal, state, local, and private actors to tackle climate change. This book also makes the math for Congress clear: with hundreds of policy options and 12 years to stop the worst impacts of climate change, now is the time to find a path forward." --Sheldon Whitehouse, U.S. Senator, Rhode Island "This superb work comes at a critical time in the history of our planet. As we increasingly face the threat and reality of climate change and its inevitable impact on our most vulnerable populations, this book provides the best and most current thinking on viable options for the future to address and ameliorate a vexing, worldwide challenge of extraordinary magnitude. Michael Gerrard and John Dernbach are two of the most distinguished academicians in the country on these issues, and they have assembled leading scholars and practitioners to provide a possible path forward. With 35 chapters and over 1,000 legal options, the book is like a menu of offerings for public consumption, showing that real actions can be taken, now and in the future, to achieve deep decarbonization. I recommend the book highly." --John C. Cruden, Past Assistant Attorney General, Environment and Natural Resources Division, U.S. Department of Justice "This book proves that we already know what to do about climate change, if only we had the will to do it. The path to decarbonization depends as much on removing legal impediments and changing outdated incentive systems as it does on imposing new regulations. There are ideas here for every sector of the economy, for every level of government, and for business and nongovernmental organizations, too, all of which should be on the table for any serious country facing the most serious of challenges. By giving us a sense of the possible, Gerrard and Dernbach and their fine authors seem to be saying two things: (1) do something; and (2) it''s possible. What a timely message, and what a great collection." --Jody Freeman, Archibald Cox Professor of Law and Founding Director of the Harvard Law School Environmental and Energy Law Program

Endangerment and Cause or Contribute Findings for Greenhouse Gases Under Section 202(a) of the Clean Air Act (US Environmental Protection Agency Regulation) (EPA) (2018 Edition) The Law Library presents the complete text of the Endangerment and Cause or Contribute Findings for Greenhouse Gases Under Section 202(a) of the Clean Air Act (US Environmental Protection Agency Regulation) (EPA) (2018 Edition). Updated as of May 29, 2018 The Administrator finds that six greenhouse gases taken in combination endanger both the public health and the public welfare of current and future generations. The Administrator also finds that the combined emissions of these greenhouse gases from new motor vehicles and new motor vehicle engines contribute to the greenhouse gas air pollution that endangers public health and welfare under CAA section 202(a). These Findings are based on careful consideration of the full weight of scientific evidence and a thorough review of numerous public comments received on the Proposed Findings published April 24, 2009. This book contains: - The complete text of the Endangerment and Cause or Contribute Findings for Greenhouse Gases Under Section 202(a) of the Clean Air Act (US Environmental Protection Agency Regulation) (EPA) (2018 Edition) - A table of contents with the page number of each section

It appears inevitable, absent legislative intervention, that regulation under the Clean Air Act (CAA) will move beyond mobile sources to the industrial and power facilities that emit most U.S. greenhouse gas (GHG) emissions. We analyze the mechanisms available to the EPA for regulating such sources, and identify one, New Source Performance Standards (NSPS) as the most predictable, likely, and practical, i.e. knowable, pathway. Based on the legal structure of the NSPS and the EPA's traditional approach, we analyze a hypothetical GHG NSPS for one sector, coal electricity generation. This analysis indicates that efficiency improvements and perhaps biomass cofiring could be implemented through the NSPS, yielding modest but meaningful emissions reductions. Trading could also rein in costs. Though analysis is limited to one sector and does not include modeling of costs, it suggests that CAA regulation, though inferior to comprehensive climate legislation, could be a useful tool for regulating stationary-source GHGs.

"It appears inevitable, absent legislative intervention, that regulation under the Clean Air Act (CAA) will move beyond mobile sources to the industrial and power facilities that emit most U.S. greenhouse gas (GHG) emissions. We analyze the mechanisms available to the EPA for regulating such sources, and identify one, New Source Performance Standards (NSPS) as the most predictable, likely, and practical, i.e. knowable, pathway. Based on the legal structure of the NSPS and the EPA's traditional approach, we analyze a hypothetical GHG NSPS for one sector, coal electricity generation. This analysis indicates that efficiency improvements and perhaps biomass cofiring could be implemented through the NSPS, yielding modest but meaningful emissions reductions. Trading could also rein in costs. Though analysis is limited to one sector and does not include modeling of costs, it suggests that CAA regulation, though inferior to comprehensive climate legislation, could be a useful tool for regulating stationary source GHGs."--Abstract.

In the spring of 2007, the U.S. Supreme Court ruled in Massachusetts v. EPA that the U.S. Environmental Protection Agency (EPA) must promulgate automobile tailpipe greenhouse gas emission standards under Section 202 of the Clean Air Act (CAA). American environmentalists hailed the Supreme Court's decision as an important victory in the battle to curb global warming. This article argues to the contrary that: 1) a large body of economic work demonstrates that the likely geographic and temporal pattern of costs and benefits to the U.S. from climate change bears no resemblance to the pollution problems that Congress intended to deal with in the Clean Air Act - with moderate climate change predominantly benefiting, rather than harming, the U.S. - so that that the Clean Air Act cannot reasonably be interpreted to cover greenhouse gas emissions; 2) By effectively forcing the EPA to regulate ghg emissions under a statute that was never intended to cover the very different problem of climate change, the Court has changed the policy status quo in a way that makes socially desirable federal climate change legislation less likely; and 3) given the global nature of the greenhouse gas emission problem, unilateral emission limits in the U.S. are likely to be worse than ineffective, in that they will likely have the perverse effect of lessening the incentive for latecomers to climate change regulation (such as China) to themselves take costly action to reduce such emissions. The article concludes by arguing that a sensible formulation of U.S. climate change policy would involve measures to respond both to the long-term threat to the U.S. and the short-term threat to developing countries. There are policy instruments appropriate to these goals: large increases in subsidies for research and development into clean coal and alternative fuels to respond to the long term threat to the U.S.; redirecting foreign aid to fund climate change adaptation in developing countries to respond to the short term threat to developing countries.