CHICAGO, MINN. & ST. PAUL RY. CO. v. MINNESOTA
A Minnesota law made its railroad commission the final judge of the reasonableness of railroad rates. The railroad maintained that "it is always a judicial question as to whether a statute is repugnant to provisions of the constitution."
Does the Minnesota law violate the due process clause of the 14th Amendment?
Yes. The statute did not provide procedural due process: railroads received no hearing or other chance to defend their rates before the commission. Moreover, a rate's reasonableness "is eminently a question for judicial investigation, requiring due process of law for its determination." A company denied the authority to charge a reasonable rate and unable to turn to a judicial mechanism for review would be deprived of the "lawful use of its property, and, thus, in substance, and effect, of the property without due process of law."