GUARANTEE CLAUSE
guarantee clause. 1. A provision in a contract, deed, or mortgage by which one person
promises to pay the ob-ligation of another. [Cases: Mortgages 111. C.J.S. Mortgages § 74.] 2.
(cap.) U.S. Const. art. IV, § 4, under which the federal government ensures for the states both a
republican form of government and protection from invasion or internal insurrection. [Blacks Law 8th]