full faith and credit
Noun
Meaning
a guarantee to pay interest and principal on debt; usually issued by the United States Treasury
Source: WordNetHypernyms
Examples
What the F.D.I.C. does is to put the full faith and credit of the United States government behind every savings account in the nation, up to a limit that has changed over the years and stands now at $100,000.
I want to state unequivocally for the world, as well as for the markets, as well as for the American people: I have no doubt that we will not lose the full faith and credit of the United States.
If you need to put your money in a safe and secure place and you want it to earn interest, Treasury bonds are safer than putting it in any bank as a deposit or putting it anywhere else, because they are backed by the full faith and credit of the United States Government.
Full faith and credit of U.S. debt is sacrosanct.