Book excerpt: 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. This collaborative effort reflects the most current thinking on Section 115 and how it relates to the Paris Agreement , the U.S. Supreme Court, and U.S. politics. The contributors dive deep into the key implementation issues EPA, the states and industry would need to address.Federal policymakers in a new presidential administration could use this book as a foundation for developing a national policy regulating greenhouse gas emissions. The book also provides detailed law and policy analyses for environmental lawyers and policy professionals, key to understanding the practice of climate law and policy in the U.S.