The MPC is not law in any jurisdiction of the United States; however, it served and continues to serve as a basis for the replacement of existing criminal codes in over two-thirds of the states. Many states adopted portions of the MPC, but only states such as New Jersey, New York, and Oregon have enacted almost all of the provisions. Idaho adopted the model penal code in its entirety in 1971, but the legislature repealed this action two months after it came into effect in 1972.