Is AAA the best rating?
Obligations rated Aaa are judged to be of the highest quality, with minimal credit risk. Standard & Poors. Very high credit quality. AA’ ratings denote expectations of very low credit risk. The Moody’s rating agency dropped the US government’s credit score by one notch from the pristine Aaa to Aa1. It cited rising debt and interest costs “that are significantly higher than similarly rated sovereigns.