Richard Fisher, CEO of the Dallas Federal Reserve, pointed out the threat of Medicare to the budget in 2008. As you can imagine, it's only gotten worse since then:
"Please sit tight while I walk you through the math of Medicare. As you may know, the program comes in three parts: Medicare Part A, which covers hospital stays; Medicare B, which covers doctor visits; and Medicare D, the drug benefit that went into effect just 29 months ago. The infinite-horizon present discounted value of the unfunded liability for Medicare A is $34.4 trillion. The unfunded liability of Medicare B is an additional $34 trillion. The shortfall for Medicare D adds another $17.2 trillion. The total? If you wanted to cover the unfunded liability of all three programs today, you would be stuck with an $85.6 trillion bill. That is more than six times as large as the bill for Social Security. It is more than six times the annual output of the entire U.S. economy.
I want to remind you that I am only talking about the unfunded portions of Social Security and Medicare. It is what the current payment scheme of Social Security payroll taxes, Medicare payroll taxes, membership fees for Medicare B, copays, deductibles and all other revenue currently channeled to our entitlement system will not cover under current rules. These existing revenue streams must remain in place in perpetuity to handle the “funded” entitlement liabilities. Reduce or eliminate this income and the unfunded liability grows. Increase benefits and the liability grows as well."
"Please sit tight while I walk you through the math of Medicare. As you may know, the program comes in three parts: Medicare Part A, which covers hospital stays; Medicare B, which covers doctor visits; and Medicare D, the drug benefit that went into effect just 29 months ago. The infinite-horizon present discounted value of the unfunded liability for Medicare A is $34.4 trillion. The unfunded liability of Medicare B is an additional $34 trillion. The shortfall for Medicare D adds another $17.2 trillion. The total? If you wanted to cover the unfunded liability of all three programs today, you would be stuck with an $85.6 trillion bill. That is more than six times as large as the bill for Social Security. It is more than six times the annual output of the entire U.S. economy.
I want to remind you that I am only talking about the unfunded portions of Social Security and Medicare. It is what the current payment scheme of Social Security payroll taxes, Medicare payroll taxes, membership fees for Medicare B, copays, deductibles and all other revenue currently channeled to our entitlement system will not cover under current rules. These existing revenue streams must remain in place in perpetuity to handle the “funded” entitlement liabilities. Reduce or eliminate this income and the unfunded liability grows. Increase benefits and the liability grows as well."
http://www.dallasfed.org/news/speeches/fisher/2008/fs080528....