华盛顿并不是掉进了经济泥坑，而是摔进了政治陷阱。标普此次对美国信用调降同样是出于对美国政治前景的担忧

The decision, S&P's officials said, was mostly based on their view that politics in Washington have become too unstable and divisive to ensure additional deficit-reduction measures are adopted next year.