History of Health Insurance in the United States, (2020), Retrieved from https://account.ache.org/iweb/upload/ Morrisey2253_Chapter_1-3b5f4e08.pdf President Johnson signs Medicare into law, (2020), Retrieved from https://www.history.com/this-day-in-his tory/johnson-signs-medicare-into-law Shi, L., & Singh, D. A. (2019). Essentials of the U.S. health care system (5th ed.). Burlington, MA: Jones and Bartlett Learning. ISBN-13: 9781284156720 https://www.gcumedia.com/digital-resou rces/jones-and-bartlett/2018/essential s-of-the-us-health-care-system_5e.php Cost Sharing. (2020). Retrieved from https://www.healthcare.gov/glossary/cos t-sharing/ National Health Expenditure Projections 2018-2027 (2020). Retrieved from