2011年1月6日,美国财政部长盖特纳致函参议院,提醒国会要及早行动提高美国公共债务的上限,以避免引起支付困难和市场混乱。因为,按照目前的借贷速度,美国的国债数量将会在3月底达到14.3万亿美元,也就是现有的国债上限,而截止到1月4日,美国政府的借贷余地还有3350亿美元。面对美国的公共债务规模已接近GDP的规模,金融专家认为,债务规模的扩大给美国的经济前景增添 On January 6, 2011, U.S. Treasury Secretary Timothy Geithner sent a letter to the Senate reminding Congress to take early action to raise the ceiling on U.S. public debt so as to avoid causing payment difficulties and market disruption. Because, at current lending rates, the U.S. national debt will reach 14.3 trillion U.S. dollars at the end of March, the existing ceiling on government bonds. As of January 4, the U.S. government still has a net lending of 335 billion U.S. dollars. In the face of the scale of the public debt in the United States that is close to the size of GDP, financial experts believe that the expansion of the debt scale will add to the economic prospects of the United States