In the case of Baltimore v. Baltimore Railroad, the Supreme Court of the United States was asked to decide whether the City of Baltimore had the right to impose a tax on the Baltimore Railroad Company. The City of Baltimore argued that it had the right to impose the tax because the railroad was a public utility and the City had the right to regulate it. The Baltimore Railroad Company argued that the tax was unconstitutional because it violated the Due Process Clause of the Fourteenth Amendment. The Supreme Court ruled in favor of the City of Baltimore, finding that the tax was constitutional. The Court held that the City had the right to impose the tax because the railroad was a public utility and the City had the right to regulate it. The Court also held that the tax did not violate the Due Process Clause of the Fourteenth Amendment because the tax was not arbitrary or oppressive. In conclusion, the Supreme Court ruled in favor of the City of Baltimore, finding that the tax imposed on the Baltimore Railroad Company was constitutional. The Court held that the City had the right to impose the tax because the railroad was a public utility and the City had the right to regulate it. The Court also held that the tax did not violate the Due Process Clause of the Fourteenth Amendment because the tax was not arbitrary or oppressive.

In the case of Baltimore v. Baltimore Railroad, the Supreme Court was tasked with determining whether a city had the power to require a railroad company to construct and maintain an elevated platform at one of its stations in order for passengers to board and disembark safely. The majority opinion held that cities did not have such authority over railroads, as it would be an unconstitutional interference with interstate commerce. In his dissent, Justice Field argued that while states could not interfere with interstate commerce directly or indirectly, they still retained their police powers which allowed them to regulate matters within their borders for public safety purposes. He further noted that this regulation should only apply if there were no other reasonable means available by which passengers could access the station without endangering themselves or others; otherwise it would constitute an undue burden on interstate commerce.