Here's a comment from Weiss Ratings agency basically saying the same thing as S&P
Weiss had initiated its sovereign debt ratings in April, with an investment-grade rating for the U.S. of "C," saying at that time that low rankings in the categories of debt burden, international stability and economic health, were partially offset by the nation's "ability to borrow in the global marketplace."
The new "C-minus" rating translates roughly to investment-grade ratings of "BBB-" at Standard & Poor's and "Baa3" at Moody's, both of which are one notch above junk status.China's main rating agence Dagong, put the US on negative watch:
China Dagong Rating agency Chairman: US Debt On Negative Watch
BEIJING (Dow Jones)--Chinese rating agency Dagong Global Credit Rating Co. said Thursday it is putting U.S. sovereign debt on negative watch for a possible downgrade, in a move that echoes Moody's Investors Service's latest warning on the U.S.
The ability of the U.S. to repay debt has shown a trend of continuous decline, its economic growth is likely to slow and it will continue to post high fiscal deficits, Guan Jianzhong, chairman of Dagong, told Dow Jones Newswires.
"The U.S. federal government's debt repayment ability is falling," Guan said.