Insurance, among other examples. The bill was first introduced in 2003 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. In the wake of Bernie Sanders' 2016 presidential campaign, in which a push for universal healthcare featured prominently, single-payer proposals gained traction. Conyers reintroduced his bill in the House of Representatives in January 2017. Four months later, the bill was supported by 112 co-sponsors, surpassing for the first time the 25% mark of co-sponsorship. In September of the same year, Sanders himself, together with 16 co-sponsors, introduced a Medicare-for-all bill in the Senate (S. 1804). An analysis of a Mercatus Center study of the 2017 proposal by economist Jeffrey Sachs found that "it rightfully and straightforwardly concludes that M4A would provide more health care coverage at lower cost than the status quo, projecting a net reduction in national health expenditures of roughly $2 trillion over a 10-year period (2022-2031), while also enabling increased health care coverage." The Congressional Budget Office and related government agencies scored the cost of a single-payer health care system several times since 1991. The Government Accountability Office published a report in 1991 noting that "[I]f the US were to shift to a system of universal coverage and a single payer, as in Canada, the savings in administrative costs [10 percent of health spending] would be more than enough to offset the expense of universal coverage." The CBO scored the cost in 1991, noting that "the population that is currently uninsured could be covered without dramatically increasing national spending on health" and that "all US residents might be covered by health insurance for roughly the current level of spending or even somewhat less, because of savings in administrative costs and lower payment rates for services used by the privately insured." A CBO report in 1993 stated that "[t]he net cost of achieving universal insurance coverage under this single payer system would be negative" in part because "consumer payments for health would fall by $1,118 per capita, but taxes would have to increase by $1,261 per capita" in order to pay for the plan. A July 1993 scoring also resulted in positive outcomes, with the CBO stating that, "[a]s the program