The Gall

"S&P affirms U.S. AAA rating, but says risks to the country's top sovereign rating have increased "noticeably" since September. S&P's "reasonable worst-case scenario" sees net general government debt rising from its 2008 level of 42% of GDP to as much as 75% by 2011"

Whose the angel here? Standard and Poors or the US government? How can the S&P responsibly rate the government and country that has given it its sustenance?