The U.S. credit rating was downgraded by Moody's Ratings on Friday, highlighting investor concerns about the government's growing debt.The downgrade from the top rating of Aaa to Aa1 "reflects the increase over more than a decade in government debt and interest payment ratios to levels that are significantly higher than similarly rated sovereigns,

The downgrade, which places the U.S. government one notch below Moody’s top Aaa status, comes as lawmakers weigh a budget that would extend significant tax cuts and boost spending for years

U.S. stocks are drifting lower, while U.S. bonds and the value of the U.S. dollar are falling more sharply on Monday following the latest reminder that the U.S government seems to be hurtling toward an unsustainable mountain of debt.