The United States National Health Care Act, or the Expanded and Improved Medicare for All Act (H.R. 676), is a bill, first introduced in the United States House of Representatives in 2003 with 25 cosponsors by former Representative John Conyers (D-MI). The bill had 49 cosponsors in 2015. As of October 1, 2017, it had 120 cosponsors, which amounts to a majority of the Democratic caucus in the House of Representatives and is the highest level of support the bill has ever received since Conyers began annually introducing the bill in 2003. The act would establish a universal single-payer health care system in the United States, the rough equivalent of Canada's Medicare and Taiwan's Bureau of National Health Insurance, among other examples. Under a single-payer system, most medical care would be paid for by the federal government, ending the need for private health insurance and premiums, and probably recasting private insurance companies as providing purely supplemental coverage, to be used when non-essential care is sought.
The national system would be paid for in part through taxes replacing insurance premiums, but also by savings realized through the provision of preventative universal healthcare and the elimination of insurance company overhead and hospital billing costs. An analysis of the bill by Physicians for a National Health Program estimated the immediate savings at $350 billion per year. Others have estimated a long-term savings amounting to 40% of all national health expenditures due to preventative health care. Preventative care can save several hundreds of billions of dollars per year in the U.S., because for example cancer patients are more likely to be diagnosed at Stage I where curative treatment is typically a few outpatient visits, instead of at Stage III or later in an emergency room where treatment can involve years of hospitalization and is often terminal.
The bill was first introduced in 2003, when it had 25 cosponsors, and has been reintroduced in each Congress since. During the 2009 health care debates over the bill that became the Patient Protection and Affordable Care Act, H.R. 676 was expected to be debated and voted upon by the House in September 2009, but was never debated.
On 13 September 2017, Senator Bernie Sanders introduced a parallel bill in the United States Senate with 16 cosponsors. The act would establish a universal single-payer health care system in the United States.
This summary is from Wikipedia.