"At the current rate of debt increase the U.S. will pushing 130% of debt to real GDP by 2018.
This is, of course, not including the funding needs that will ultimately be needed to support the increased costs of the entitlement programs of Social Security, Medicare and now the Affordable Care Act (ACA).
The reality is that debt requirements will substantially increase as entitlement programs continue to consume ever larger chunks of the current budget.
By 2020, the current welfare programs alone are expected to require 75% of all federal revenues which does not include the impact of the ACA.
This, of course, is unsustainable."