Dan Mitchell writes in the New York Post:
A lot of people get upset about the national debt, which is somewhere between $11 trillion and $16 trillion, depending on whether you include money the government owes itself. Those are big numbers — but if you add up the amount of money that the government is promising to spend for entitlement programs in the future and compare that figure to the amount of revenue that the government projects it will collect for those programs, the cumulative shortfall is more than $100 trillion. And that’s after adjusting for inflation. Some politicians claim this huge, baked-into-the-cake expansion of government isn’t a problem, because we can raise taxes. But that’s exactly what Europe’s welfare states tried — and it didn’t work. Simply stated, even huge tax hikes won’t stem the flow of red ink in the long run if government keeps growing faster than the private economy. This is the fiscal problem that demands attention. Absent real entitlement reform, such as block-granting Medicaid to the states, the burden of government spending will consume ever-larger shares of our economic output with each passing year.