Higher debt-service costs require higher tax rates, which in turn weaken incentives and reduce economic growth. By the end of the decade, the US will have to pay an amount equivalent to more than one-third of the revenue from personal-income taxes just to pay the interest on the national debt.
庞大且增长的国民债务对经济健康而言是一个严重威胁。债务维持成本的上升要求提高税率，而这反过来又削弱了激励、抑制了经济增长。十年后，美国需要付出相当于个人所得税收入三分之一多的资金用来偿付国民债务利息。