Moody's ratings agency lowered the US government's credit rating by one notch, citing concerns over rising deficits and unsustainable interest costs.

The international credit agency Moody's has downgraded the U.S.' credit rating from its highest AAA rating to Aa1. CBS News ...

The downgrade marks the end of an era: Moody’s had maintained a pristine “Aaa” rating on the United States since first ...

Moody’s decision to lower the rating on U.S. government debt seems unlikely to shake up the corporate bond market too much.