The CBO’s main concern about the debt

http://www.foxnews.com/politics/2015/04/15/tax-calculator-federal-debt/

These numbers pose a real threat. The CBO has issued warnings about the serious negative consequences that such high and rising debt and interest payments on the debt could have on both the economy and the federal budget.

“The large amount of debt might restrict policymakers’ ability to use tax and spending policies.”