In Baltimore & Ohio Railroad v. Marshall County Supervisors, the Supreme Court of the United States was asked to decide whether a county could tax a railroad for the privilege of operating within its borders. The Marshall County Supervisors had imposed a tax on the Baltimore & Ohio Railroad for the privilege of operating within the county. The railroad argued that the tax was unconstitutional because it was a burden on interstate commerce. The Supreme Court held that the tax was unconstitutional because it was a burden on interstate commerce. The Court reasoned that the tax was a burden on interstate commerce because it was imposed on the railroad for the privilege of operating within the county. The Court noted that the tax was not imposed on the railroad for the privilege of operating within the state, but rather for the privilege of operating within the county. The Court concluded that the tax was a burden on interstate commerce and therefore unconstitutional. The Court's decision in this case established the principle that a state or local government cannot impose a tax on a railroad for the privilege of operating within its borders. This decision has been cited in numerous subsequent cases involving the taxation of interstate commerce.

In the case of Baltimore & Ohio Railroad v. Marshall County Supervisors, the Supreme Court was asked to decide whether a county had the right to tax railroad property within its borders. The majority opinion held that counties did not have this power and that only states could impose taxes on railroads. However, in his dissenting opinion Justice Field argued that it would be unfair for states to be able to tax railroad property while counties were unable to do so as well. He reasoned that since railroads operated within individual counties they should pay taxes directly into those local governments rather than having them go through state governments first. Furthermore, he noted how important these funds were for providing essential services such as schools and roads in rural areas where there may not be enough money coming from other sources of taxation or revenue-raising activities like tolls or licenses fees. In conclusion, Justice Field believed strongly in allowing local governments more autonomy when it came to raising funds needed for their communities’ needs by taxing railroad companies operating within their jurisdictions