Reuters
By Walden Siew
Wed Sep 17, 2008 5:29pm EDT

NEW YORK (Reuters) - Pressure is building on the pristine “AAA” rating of the United States after a federal bailout of American International Group Inc, the chairman of Standard & Poor’s sovereign ratings committee said on Wednesday.

The $85 billion bailout of AIG on Tuesday by the U.S. Federal Reserve “has weakened the fiscal profile of the United States,” S&P’s John Chambers told Reuters in an interview.

“Lack of a pro-active stance could have resulted in further financial stress and put pressure on the U.S. triple-A rating,” Chambers said. “There’s no God-given gift of a ‘AAA’ rating, and the U.S. has to earn it like everyone else.”

The cost of insuring 10-year U.S. Treasury debt against default rose on Wednesday to a record high, a day after the government rescued insurer AIG with an $85 billion loan. At one time, AIG was the world’s largest insurer, ranked by market value. At midday on Wednesday, AIG’s stock was down 33 percent at $2.50 on the New York Stock Exchange.

Ten-year credit default swaps, or CDS, on Treasury debt widened 3 basis points to 26 basis points, according to data from CMA DataVision. This means it costs $26,000 per year to insure $10 million of U.S. Treasury debt against default.

Five-year credit default swaps on Treasury debt were steady at 21.5 basis points. That compares to 9.8 basis points on German 5-year CDS and 13.2 basis points on German 10-year CDS, CMA said.

Earlier this month, S&P affirmed the “AAA” sovereign rating of the United States, noting risks to the U.S. credit profile, including the deteriorating credit profiles for most U.S. financial institutions over the past 12 months, S&P said in a September 3 statement.