(Reuters) - Moody’s on Friday cut the U.S. credit rating by one notch, citing rising debt and interest payments that outpace those of similarly rated sovereigns, in a move that marks the end of an era as Moody’s was the last major agency to maintain a triple-A rating for U.S. sovereign debt.

Moody’s has downgraded the nation’s credit rating one notch to Aa1, leaving the U.S. without a top grade among any of the major rating agencies.