In the case of Keokuk and Western Railroad Company v. Scotland County in 1893, the U.S Supreme Court was tasked with determining whether a county could impose taxes on a railroad company for building tracks through its jurisdiction. The Keokuk and Western Railroad Company argued that it should not be subject to these taxes as they were unconstitutional under both state law and the Fourteenth Amendment's Equal Protection Clause because other properties within Scotland County were not taxed at similar rates. However, the court ruled against them stating that railroads are unique entities due to their nature of operation which justifies different tax treatment compared to other types of property or businesses within a county. Therefore, counties have legal authority to levy such taxes on railroad companies operating within their boundaries without violating constitutional principles.

In the dissenting opinion for Keokuk and Western Railroad Company v. Scotland County, it was argued that the majority's decision contradicted previous rulings of the court regarding tax assessments on railroad properties. The dissent took issue with how the county had assessed taxes based on a valuation of all property owned by the railroad company within its borders, rather than only taxing those specific portions of track located in their jurisdiction. They believed this method unfairly inflated tax obligations for railroads compared to other types of businesses or individuals who were taxed solely on property physically present within county lines. Furthermore, they disagreed with allowing counties to levy additional taxes against railroads as punishment for non-payment or underpayment due to disputes over these valuations; such penalties were viewed as excessive and unjustly punitive towards an industry vital to national commerce.