The United States Securities and Exchange Commission (“SEC”) is reviewing sustainability. On April 13, 2016 the SEC issued a “Concept Release” seeking public comments on 340 topics relating to business and financial disclosure requirements for publicly-traded companies under Regulation S-K. See 81 Fed. Reg. 23916 (April 22, 2016) (“CR”). Several topics addressed the disclosure of company information relating to sustainability and public policy issues. Such issues, including climate change, resource scarcity, corporate social responsibility (“CSR”), and good corporate citizenship, are often referred to generically as environmental, social, and governance (“ESG”) concerns. C.R., p. 206. The concepts of CSR and ESG overlap greatly if not entirely, and precise definitions of these terms are lacking. In this article, the terms “sustainability” and “ESG” will be used interchangeably in the context of corporate reporting. Many of the largest companies in the U.S. voluntarily publish annual sustainability reports and/or website ESG content. At issue is to what extent ESG reporting by publicly-traded companies should be required by SEC regulations.