Key figures: Standard & Poor’s, U.S. Treasury Department, President Barack Obama, U.S. Congress (112th), Congressional Joint Select Committee on Deficit Reduction
Summary
On August 5, 2011, Standard & Poor’s (S&P) reduced the long-term sovereign credit rating of the United States federal government from AAA to AA+, marking the first time in American history that a major credit rating agency had downgraded U.S. government debt below its highest rating. The downgrade came three days after President Barack Obama signed the Budget Control Act of 2011 on August 2, which had resolved a months-long political standoff over raising the federal debt ceiling. S&P cited the political brinkmanship surrounding the debt-ceiling debate, arguing it rendered the government’s fiscal management “less stable, less effective, and less predictable” than warranted by a top-tier sovereign rating.
The downgrade was immediately disputed by the Obama administration, which identified a $2 trillion discrepancy in S&P’s deficit calculations. Treasury officials notified S&P of the mathematical error before the announcement; S&P acknowledged the error and revised its projections but maintained the downgrade regardless. A Treasury official was widely quoted stating: “A judgment flawed by a $2 trillion error speaks for itself.” The administration described the decision as a “facts-be-damned decision.” The other two major rating agencies, Moody’s and Fitch, retained the United States at AAA, though both adjusted their outlooks to negative during 2011.
Background: The 2011 Debt-Ceiling Crisis
The U.S. federal government operates under a statutory debt ceiling — a legislated limit on the total amount of debt the federal government may issue — which requires periodic increases by Congress as spending and borrowing accumulate. Through the first half of 2011, the Treasury had reached and then begun employing extraordinary accounting measures to remain under the ceiling, warning that without a legislative increase before approximately August 2, 2011, the government would be unable to meet its obligations and could default.
Negotiations between the Republican-controlled House of Representatives and the Obama White House were protracted and acrimonious, involving disputes over deficit reduction mechanisms, tax increases versus spending cuts, and the fundamental question of the federal government’s fiscal trajectory. Several potential deals collapsed. Markets grew increasingly anxious over the summer; S&P had placed U.S. debt on “CreditWatch Negative” in July 2011, signaling a possible downgrade.
The Budget Control Act of 2011 (Public Law 112-25) was passed by the House on August 1, 2011, by a vote of 269–161, and by the Senate on August 2 by 74–26. President Obama signed it on August 2. The Act raised the debt ceiling by $400 billion immediately, with provisions for additional increases of up to $1.5 trillion, and established a Congressional Joint Select Committee on Deficit Reduction (the “super committee”) tasked with identifying $1.5 trillion in additional savings over ten years. S&P deemed the fiscal consolidation embodied in the Act insufficient to stabilize the U.S. government’s debt burden within the decade.
Market Reaction
When global markets opened on Monday, August 8 — the first trading day after the Friday-evening announcement — they fell sharply. The Dow Jones Industrial Average dropped 634.76 points (5.55%), the S&P 500 fell 6.66%, and the Nasdaq Composite lost 6.90%, among the worst single-day percentage losses since 2008. European markets also declined. The S&P downgrade coincided with intensifying fears about the Eurozone sovereign debt crisis, amplifying the sell-off.
A counterintuitive dynamic emerged: despite the downgrade of U.S. government bonds, investors bought Treasuries rather than selling them, pushing yields down and prices up. The dollar also strengthened against the euro and British pound. This behavior reflected a flight to safety — with European sovereign debt looking riskier, U.S. Treasuries remained the world’s preferred safe-haven asset even at a reduced S&P rating.
Significance
The S&P downgrade was a landmark event symbolizing the political dysfunction that had come to characterize U.S. fiscal governance in the partisan polarization of the early twenty-first century. Though the immediate financial consequences were paradoxical — Treasury borrowing costs did not rise in the aftermath — the downgrade carried lasting reputational significance as a marker of institutional stress. It focused international attention on the consequences of using the statutory debt ceiling as political leverage, a recurring feature of U.S. legislative dynamics.
The episode illustrated the limits of credit-rating agency authority: despite the downgrade, the United States retained its position as issuer of the world’s pre-eminent reserve currency and safe-haven asset. The other major agencies followed only years later: Fitch downgraded the United States from AAA to AA+ in August 2023, and Moody’s lowered its rating from Aaa to Aa1 in May 2025 — both citing fiscal deterioration and governance concerns that echoed S&P’s 2011 rationale. The 2011 downgrade thus stands as the first in a sequence of institutional signals about long-term American fiscal trajectory.
Sources
- United States federal government credit-rating downgrades — Wikipedia
- 2011 United States debt-ceiling crisis — Wikipedia
- S&P downgrades U.S. credit rating — CNN Money, August 5, 2011
- S&P Downgrades U.S. Credit Rating — NPR, August 6, 2011
- Budget Control Act of 2011 — Congress.gov (Public Law 112-25)