Debt: S&P Affirms US AAA Rating, Cuts Outlook to Negative - 18 April 2011
"...the S&P said the move signals there's at least a one-in-three likelihood that it could lower its long-term rating on the United States within two years.

The U.S. dollar fell broadly on word of the revision. Gold prices, meanwhile, hit a new [nominal] record above $1,496 an ounce..."