America’s long-run fiscal problem isn’t debt. That’s just a symptom. The real challenge is a rising burden of government spending, largely because of demographic change and poorly designed entitlement programs.
Measured as a share of economic output, the tax burden already is above historical levels. Moreover, taxes are projected to rise even further, so there is zero plausible evidence for the notion that America’s future fiscal crisis is the result of inadequate tax revenue.
Source: Educating Congress and Debunking the White House on the Debt Limit | International Liberty