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Informal for a debt security issued by the United States government, as opposed to one of its agencies. Perhaps the most prominent example of a direct security is a U.S. Treasury security. Direct securities are considered risk-free because they are guaranteed by the full faith and credit of the United States government.
direct (federal) government obligation
A debt that is backed by the full taxing power of the U.S. government. Direct obligations include Treasury bills, Treasury bonds, and U.S. savings bonds. These investments are generally considered to be of the very highest quality. See also federal agency security.