Stocks are falling today after Moody’s downgraded the U.S. government’s credit rating Friday, citing repeated failures to rein in rising debt. The rating was cut from Aaa to Aa1, though Moody’s noted the U.S. still has “exceptional credit strengths” like a strong economy and the dollar’s global role. It’s the last of the three major agencies to issue a downgrade — following S&P in 2011 and Fitch in 2023.