This chapter studies Article XIV of the Oklahoma constitution, which concerns banks and banking. Section 1 expresses the state’s public policy of protecting people who deposit money in state banks. It provides for the creation of a banking department to be under the control of a bank commissioner with rights, duties, powers, and privileges defined by statute. Section 2 states that “the Legislature shall have authority to classify loans and lenders, license and regulate lenders, define interest and fix maximum rates of interest.” Meanwhile, Section 3 provides that “the taking, receiving, reserving, or charging a rate of interest greater than is allowed by the preceding section, when knowingly done, shall be deemed a forfeiture of the entire interest which the note, bill, or other evidence of debt carries with it, or which has been agreed to be paid thereon.” The common law remedy to recover for an excessive, illegal interest rate was “assumpsit” or an action for money had and received.