The Granger movement supported efforts by politicians to regulate rates charged by the railroads and grain warehouses. It claimed credit for the ideas of the Cooperative Extension Service, Rural Free Delivery, and the Farm Credit System. The peak of their political reputation was marked by the Supreme Court decision in "Munn v. Illinois" (1877), which held that grain warehouses were a "private utility in the public interest," and so could be regulated by public law. However this achievement was overturned later by the Supreme Court in "Wabash v. Illinois" (1886). The Grange also endorsed the temperance cause to avoid alcohol, the direct election of Senators and women's suffrage.