Source: Charles Riley / CNN Money New York – Credit rating agency Moody's said Tuesday the United States will keep its sterling AAA credit rating for the time being, but lowered its outlook on U.S. debt to "negative." A "negative outlook" indicates the possibility that Moody's would downgrade the country's sovereign credit rating within a year or two. The rating agency, which had placed U.S. debt rating on review for a possible downgrade last month, said the political deal to [...]