Yes, Medicare is the problem, and it has been destroying the budget, the way laws are passed, and the medical system since 1965.
A system of payments that is open-ended cannot coexist with Constitutional money and a rational appropriation process. Medicare has relied on money-printing and borrowing since 1986.
IF insurance for over-65s is to continue, either fixed payments have to be adopted (you get $10K/year to buy insurance or pay your bills), OR strict rationing has to be adopted. There is no other way.
Death panels?