S&P managing director John Chambers, says the U.S. credit rating could be dropped from the AAA bond rating it has enjoyed since 1941. S&P says it could downgrade U.S. debt securities even if the debt ceiling is reached, if it appears that there is too much political maneuvring in debt ceiling talks and deficit reduction. It said there is a 50% chance that U.S. debt securities would be downgraded in three months. Another reason for a downgrade given by S&P is a failure to come up with an agreement to reduce the budget deficit by $4 trillion over 10 years, because it would show inability to agree and implement a credible fiscal consolidation policy. Moody's Investors Service also said that it has placed its Aaa rating on U.S. debt securities "on review for possible downgrade."