"The Medicare program has two separate trust funds—the Hospital Insurance (HI) Trust Fund, which finances Part A, and the Supplementary Medical Insurance (SMI) Trust Fund, which finances Parts B and D. (Part C payments are made in appropriate parts from both the HI and SMI Trust Funds.) Both funds are maintained by the Department of the Treasury and overseen by a Board of Trustees, which reports annually to Congress."Similar to Social Security, the HI portion of Medicare was designed to be self-supporting and is financed through dedicated sources of income. The primary source is payroll taxes paid by employees and…