The document discusses single-payer healthcare systems and whether one could work in the U.S. It defines single-payer as a healthcare financing system with one source of money for providers. Examples given include Medicare and some country-wide systems. Pros listed are potential savings on administration costs and universal coverage. Cons discussed include the potential for government mispricing and significant changes required. Polls show most Americans favor reform but are split on solutions and tax increases. Overall the conclusion is that a single-payer system could increase access but faces strong political opposition and transition challenges.