A Practice Note discussing environmental, social, and governance (ESG) trends affecting the supply chain. This Note discusses what ESG is, why it is important, and how it relates to corporate social responsibility (CSR). This Note identifies relevant legislation affecting supply chains in the ESG arena, including the California Transparency in Supply Chains Act of 2010 and the SEC's Conflict Minerals Rules, and outlines the different approaches that companies can take to address ESG issues in their supply chains.