Simon Johnson comments on Standard and Poor’s irrational ratings:
Standard & Poor’s downgrade of United States government debt last month has been much debated, but not enough attention has been devoted to the fact, reported last week by Bloomberg News, that it continues to rate securities based on subprime mortgages as AAA.
In short, S.&P. is suggesting that these mortgages are more creditworthy than the United States government — a striking proposition. Leave aside for a moment that S.&P. made a big mistake in its analysis of the federal budget (as explained by James Kwak in our blog). Just focus on all the things that can go wrong with subprime mortgages: housing prices can fall, people can lose jobs, the economy may fall into recession and so on.