On Friday, Standard & Poor's announced that it had downgraded the U.S.'s credit rating for AAA+ to AA+ after calculation errors were caught. This is the first time in over 70 years that the United States' credit rating has been downgraded. This comes after a shaky week in Washington. As of Friday, the Dow Jones had dropped 400 points. Analysts say that the downgrade is not likely to make a major impact immediately. Other credit raters like Moody's Investors Service and Fitch ratings have decided to keep the credit rating at AAA for now.