California enacted the Wine Fair Dealing Act, which requires out-of-state suppliers of wine to show good cause if they wish to terminate a distributorship. In-state suppliers of wine are exempt from this requirement and can cancel at will. A New York wine supplier wants to end its relationship with a California firm. The California firm, invoking the operative provision of the Wine Fair Dealing Act, objects because the New York firm has not demonstrated good cause for the termination. The New York supplier argues that this provision of California law violates the commerce clause of the United States Constitution. Is the commerce clause violated? Why?