Government debt is not cheap

The red line is the total interest charge as a percentage of debt, including social security. The blue line is real growth.

Using this metric, the government has been paying much more in interest costs than new tax generated via growth.

We can see that since the crash, that Treasury has gotten a better deal. The problem is the one I always mention, we pay yesterday's higher rates for today's spending.  Things have evened out a bit since the crash.

However, government liquidity is spent as the CBO chart of spending shows all discretionary spending is driven toward zero and the government is forcing an  an entitlement economy on the system. Thus we will be having sudden stops when government liquidity dries up.