Warren Buffett says there's no question that the United States' debt is still AAA and that he's not changing his mind about Treasurys based on Standard & Poor's downgrade.
"If anything, it may change my opinion on S&P," the legendary investor said.
"In our view, the U.S. sovereign credit rating constrains the long-term rating on these U.S. insurers because their businesses and assets are highly concentrated in the U.S. and they have significant holdings in U.S. Treasury and agency securities"
