Many commentators questioned the validity of the downgrade that threatened to collapse the market. Dean Baker, co-director of the Center for Economic and Policy Research, said in a statement:
"The Treasury Department revealed that S&P’s decision was initially based on a $2 trillion error in accounting. However, even after this enormous error was corrected, S&P went ahead with the downgrade. This suggests that S&P had made the decision to downgrade independent of the evidence. [Emphasis added.]
Paul Krugman, writing in the New York Times, was also skeptical, stating:
[E]verything I’ve heard about S&P’s demands suggests that it’s talking nonsense about the US fiscal situation. The agency has suggested that the downgrade depended on the size of agreed deficit reduction over the next decade, with $4 trillion apparently the magic number. Yet US solvency depends hardly at all on what happens in the near or even medium term: an extra trillion in debt adds only a fraction of a percent of GDP to future interest costs . . . .
I'm not sure Brown proves her basic thesis, but the analysis of the downgrade is spot on.
http://www.informationclearinghouse.info/article28885.htm