A Constitutional requirement that public acts, records, and judicial proceedings of one state be accorded the same effect as in the state of the act or proceeding. A Full Faith and Credit Security is a pledge of repayment that places taxing power or other assured revenue sources as security for the repayment of the debt.
An unconditional commitment to pay interest and principal on debt, usually issued or guaranteed by the U.S. Treasury or another government entity. see also combination bond, credit, Savings Bond, Treasuries, GNMA.
The Constitution requires the states to cooperate with each other and binds them together into one nation. Pg. 250.