The Granger Laws were a series of laws passed in several midwestern states of the United States, namely Minnesota, Iowa, Wisconsin, and Illinois, in the late 1860s and early 1870s. The Granger Laws were promoted primarily by a group of farmers known as The National Grange of the Order of Patrons of Husbandry. The main goal of the Grange was to regulate rising fare prices of railroad and grain elevator companies after the American Civil War. The laws, which upset major railroad companies, were a topic of much debate at the time and ended up leading to several important court cases, such as Munn v. Illinois and Wabash v. Illinois.
Certain aspects of the Granger Laws varied from state to state, but all of the involved states shared the same intent: to make pricing of railroad rates more favorable to farmers, small rural farmers in particular, in the states. This common aspiration was a result of the laws being promoted heavily in state politics by the National Grange of the Patrons of Husbandry (Grange). The Grange was an organization of farmers that stretched throughout the Midwestern United States and filtered into the Southern United States. Despite the highest proportion of its members being in Kansas and Nebraska, the Grange were most effective in Illinois, Wisconsin, Iowa, and Minnesota, where the Granger laws were eventually passed. The two Granger laws that became the best-known were those passed in Illinois and Wisconsin.
The Illinois granger laws focused primarily on eliminating the discrimination between long- and short-haul rates of railroads and regulating the maximum price charged by grain storage facilities. The farmers of the Illinois Grange wanted this because smaller rural farmers who tended to ship more locally were being charged such high rates that they were having a difficult time staying in business and making a profit. The Illinois granger laws led to several important court cases, two of which were Munn v. Illinois and the Wabash Case.
In 1877, a grain storage company, Munn and Scott, was found guilty for violating the Illinois granger law, which set a maximum grain storage charge. Following an appeal to the Illinois Supreme Court, which resulted in the affirmation of the law, the case was taken to the U.S. Supreme Court. The U.S. Supreme Court then ruled that because the company was in a business that affected the public interest, the government could in fact regulate the company. This ruling also applied to railroads, as railroad companies were deemed private companies serving the public interest. Thus the Munn v. Illinois court case set the precedent that regulating both grain elevator rates and railroad rates was within the bounds of the constitution.