A maior potencia economica do mundo tinha o mesmo rating, AAAA, desde 1941. Esta alteracao e mais um golpe na combalida economia americana, e com certeza tera impactos a nivel mundial. Leia abaixo o relatorio oficial que explica o rebaixamento.Caso nao consiga visualizar essa mensagem, clique aqui. August 5, 2011 United States of America Long-Term Rating Lowered To 'AA+' On Political Risks And Rising Debt Burden; Outlook Negative OverviewWe have lowered our long-term sovereign credit rating on the UnitedStates of America to 'AA+' from 'AAA' and affirmed the 'A-1+' short-termrating.We have also removed both the short- and long-term ratings fromCreditWatch negative.The downgrade reflects our opinion that the fiscal consolidation planthat Congress and the Administration recently agreed to falls short ofwhat, in our view, would be necessary to stabilize the government'smedium-term debt dynamics.More broadly, the downgrade reflects our view that the effectiveness,stability, and predictability of American policymaking and politicalinstitutions have weakened at a time of ongoing fiscal and economicchallenges to a degree more than we envisioned when we assigned anegative outlook to the rating on April 18, 2011.Since then, we have changed our view of the difficulties in bridging thegulf between the political parties over fiscal policy, which makes uspessimistic about the capacity of Congress and the Administration to beable to leverage their agreement this week into a broader fiscalconsolidation plan that stabilizes the government's debt dynamics anytime soon.The outlook on the long-term rating is negative. We could lower thelong-term rating to 'AA' within the next two years if we see that lessreduction in spending than agreed to, higher interest rates, or newfiscal pressures during the period result in a higher general governmentdebt trajectory than we currently assume in our base case.Rating ActionOn Aug. 5, 2011, Standard & Poor's Ratings Services lowered its long-termsovereign credit rating on the United States of America to 'AA+' from 'AAA'.The outlook on the long-term rating is negative. At the same time, Standard &Poor's affirmed its 'A-1+' short-term rating on the U.S. In addition, Standard& Poor's removed both ratings from CreditWatch, where they were placed on July 14, 2011, with negative implications.The transfer and convertibility (T&C) assessment of the U.S.--ourassessment of the likelihood of official interference in the ability ofU.S.-based public- and private-sector issuers to secure foreign exchange fordebt service--remains 'AAA'.RationaleWe lowered our long-term rating on the U.S. because we believe that theprolonged controversy over raising the statutory debt ceiling and the relatedfiscal policy debate indicate that further near-term progress containing thegrowth in public spending, especially on entitlements, or on reaching anagreement on raising revenues is less likely than we previously assumed andwill remain a contentious and fitful process. We also believe that the fiscalconsolidation plan that Congress and the Administration agreed to this weekfalls short of the amount that we believe is necessary to stabilize thegeneral government debt burden by the middle of the decade.Our lowering of the rating was prompted by our view on the rising publicdebt burden and our perception of greater policymaking uncertainty, consistentwith our criteria (see "Sovereign Government Rating Methodology and Assumptions," June 30, 2011, especially Paragraphs 36-41). Nevertheless, we view the U.S.