This document summarizes a webinar presented by the American Sustainable Business Council (ASBC) on the business case for a single-payer "Medicare for All" healthcare system in the United States. The webinar discusses the economic benefits of a single-payer system compared to the current multi-payer system, highlighting analyses showing that a single-payer system would lower overall healthcare costs while improving outcomes. Experts on the webinar address criticisms of single-payer and explain why the U.S. has not adopted such a system previously, noting the significant financial interests of private insurers and others that benefit from the current inefficient approach. The webinar aims to make the economic argument for why single-