Due process under the Fourteenth Amendment can be broken down into two categories: procedural due process and substantive due process. Procedural due process, based on principles of “fundamental fairness,” addresses which legal procedures are required to be followed in state proceedings. Relevant issues, as discussed in detail below, include notice, opportunity for hearing, confrontation and cross-examination, discovery, basis of decision, and availability of counsel. Substantive due process, although also based on principles of “fundamental fairness,” is used to evaluate whether a law can be applied by states at all, regardless of the procedure followed. Substantive due process has generally dealt with specific subject areas, such as liberty of contract or privacy, and over time has alternately emphasized the importance of economic and noneconomic matters. In theory, the issues of procedural and substantive due process are closely related. In reality, substantive due process has had greater political import, as significant portions of a state legislature’s substantive jurisdiction can be restricted by its application.
Although the extent of the rights protected by substantive due process may be controversial, its theoretical basis is firmly established and forms the basis for much of modern constitutional case law. Passage of the Reconstruction Amendments (13th, 14th, and 15th) gave the federal courts the authority to intervene when a state threatened fundamental rights of its citizens,39 and one of the most important doctrines ﬂowing from this is the application of the Bill of Rights to the states through the Due Process Clause.40 Through the process of “selective incorporation,” most of the provisions of the first eight Amendments, such as free speech, freedom of religion, and protection against unreasonable searches and seizures, are applied against the states as they are against the federal government. Though application of these rights against the states is no longer controversial, the incorporation of other substantive rights, as is discussed in detail below, has been.
“Person”.—The Due Process Clause provides that no states shall deprive any “person” of “life, liberty or property” without due process of law. A historical controversy has been waged concerning whether the framers of the Fourteenth Amendment intended the word “person” to mean only natural persons, or whether the word was substituted for the word “citizen” with a view to protecting corporations from oppressive state legislation.41 As early as the 1877 Granger Cases42 the Supreme Court upheld various regulatory state laws without raising any question as to whether a corporation could advance due process claims. Further, there is no doubt that a corporation may not be deprived of its property without due process of law.43 Although various decisions have held that the “liberty” guaranteed by the Fourteenth Amendment is the liberty of natural,44 not artificial, persons,45 nevertheless, in 1936, a newspaper corporation successfully objected that a state law deprived it of liberty of the press.46
A separate question is the ability of a government official to invoke the Due Process Clause to protect the interests of his office. Ordinarily, the mere official interest of a public officer, such as the interest in enforcing a law, has not been deemed adequate to enable him to challenge the constitutionality of a law under the Fourteenth Amendment.47 Similarly, municipal corporations have no standing “to invoke the provisions of the Fourteenth Amendment in opposition to the will of their creator,” the state.48 However, state officers are acknowledged to have an interest, despite their not having sustained any “private damage,” in resisting an “endeavor to prevent the enforcement of statutes in relation to which they have official duties,” and, accordingly, may apply to federal courts “to review decisions of state courts declaring state statutes, which [they] seek to enforce, to be repugnant to the [Fourteenth Amendment of] the Federal Constitution . . . .”49
“Property” and Police Power.—States have an inherent “police power” to promote public safety, health, morals, public convenience, and general prosperity,50 but the extent of the power may vary based on the subject matter over which it is exercised.51 If a police power regulation goes too far, it will be recognized as a taking of property for which compensation must be paid.52 Thus, the means employed to effect its exercise may be neither arbitrary nor oppressive but must bear a real and substantial relation to an end that is public, specifically, the public health, safety, or morals, or some other aspect of the general welfare.53
An ulterior public advantage, however, may justify a comparatively insignificant taking of private property for what seems to be a private use.54 Mere “cost and inconvenience (different words, probably, for the same thing) would have to be very great before they could become an element in the consideration of the right of a state to exert its reserved power or its police power.”55 Moreover, it is elementary that enforcement of a law passed in the legitimate exertion of the police power is not a taking without due process of law, even if the cost is borne by the regulated.56 Initial compliance with a regulation that is valid when adopted, however, does not preclude later protest if that regulation subsequently becomes confiscatory in its operation.57
“Liberty”.—As will be discussed in detail below, the substantive “liberty” guaranteed by the Due Process Clause has been variously defined by the Court. In the early years, it meant almost exclusively “liberty of contract,” but with the demise of liberty of contract came a general broadening of “liberty” to include personal, political and social rights and privileges.58 Nonetheless, the Court is generally chary of expanding the concept absent statutorily recognized rights.59
The Rise and Fall of Economic Substantive Due Process: Overview
Long before the passage of the 14th Amendment, the Due Process Clause of the Fifth Amendment was recognized as a restraint upon the Federal Government, but only in the narrow sense that a legislature needed to provide procedural “due process” for the enforcement of law.60 Although individual Justices suggested early on that particular legislation could be so in conﬂict with precepts of natural law as to render it wholly unconstitutional,61 the potential of the Due Process Clause of the 14th Amendment as a substantive restraint on state action appears to have been grossly underestimated in the years immediately following its adoption.62
Thus, early invocations of “substantive” due process were unsuccessful. In the Slaughter-House Cases,63 discussed previously in the context of the Privileges or Immunities Clause,64 a group of butchers challenged a Louisiana statute conferring the exclusive privilege of butchering cattle in New Orleans to one corporation. In reviewing the validity of this monopoly, the Court noted that the prohibition against a deprivation of property without due process “has been in the Constitution since the adoption of the fifth amendment, as a restraint upon the Federal power. It is also to be found in some forms of expression in the constitutions of nearly all the States, as a restraint upon the power of the States. . . . We are not without judicial interpretation, therefore, both State and National, of the meaning of this clause. And it is sufficient to say that under no construction of that provision that we have ever seen, or any that we deem admissible, can the restraint imposed by the State of Louisiana upon the exercise of their trade by the butchers of New Orleans be held to be a deprivation of property within the meaning of that provision.”65
Four years later, in Munn v. Illinois,66 the Court reviewed the regulation of rates charged for the transportation and warehousing of grain, and again refused to interpret the due process clause as invalidating substantive state legislation. Rejecting contentions that such legislation effected an unconstitutional deprivation of property by preventing the owner from earning a reasonable compensation for its use and by transferring an interest in a private enterprise to the public, Chief Justice Waite emphasized that “the great office of statutes is to remedy defects in the common law as they are developed. . . . We know that this power [of rate regulation] may be abused; but that is no argument against its existence. For protection against abuses by legislatures the people must resort to the polls, not to the courts.”
In Davidson v. New Orleans,67 Justice Miller also counseled against a departure from these conventional applications of due process, although he acknowledged the difficulty of arriving at a precise, all-inclusive definition of the clause. “It is not a little remarkable,” he observed, “that while this provision has been in the Constitution of the United States, as a restraint upon the authority of the Federal government, for nearly a century, and while, during all that time, the manner in which the powers of that government have been exercised has been watched with jealousy, and subjected to the most rigid criticism in all its branches, this special limitation upon its powers has rarely been invoked in the judicial forum or the more enlarged theatre of public discussion. But while it has been part of the Constitution, as a restraint upon the power of the States, only a very few years, the docket of this court is crowded with cases in which we are asked to hold that State courts and State legislatures have deprived their own citizens of life, liberty, or property without due process of law. There is here abundant evidence that there exists some strange misconception of the scope of this provision as found in the fourteenth amendment. In fact, it would seem, from the character of many of the cases before us, and the arguments made in them, that the clause under consideration is looked upon as a means of bringing to the test of the decision of this court the abstract opinions of every unsuccessful litigant in a State court of the justice of the decision against him, and of the merits of the legislation on which such a decision may be founded. If, therefore, it were possible to define what it is for a State to deprive a person of life, liberty, or property without due process of law, in terms which would cover every exercise of power thus forbidden to the State, and exclude those which are not, no more useful construction could be furnished by this or any other court to any part of the fundamental law. But, apart from the imminent risk of a failure to give any definition which would be at once perspicuous, comprehensive, and satisfactory, there is wisdom, we think, in the ascertaining of the intent and application of such an important phrase in the Federal Constitution, by the gradual process of judicial inclusion and exclusion, as the cases presented for decision shall require, with the reasoning on which such decisions may be founded.”
A bare half-dozen years later, however, in Hurtado v. California,68 the Justices gave warning of an impending modification of their views. Justice Mathews, speaking for the Court, noted that due process under the United States Constitution differed from due process in English common law in that the latter applied only to executive and judicial acts, whereas the former also applied to legislative acts. Consequently, the limits of the due process under the 14th Amendment could not be appraised solely in terms of the “sanction of settled usage” under common law. The Court then declared that “[a]rbitrary power, enforcing its edicts to the injury of the persons and property of its subjects, is not law, whether manifested as the decree of a personal monarch or of an impersonal multitude. And the limitations imposed by our constitutional law upon the action of the governments, both state and national, are essential to the preservation of public and private rights, notwithstanding the representative character of our political institutions. The enforcement of these limitations by judicial process is the device of self-governing communities to protect the rights of individuals and minorities, as well against the power of numbers, as against the violence of public agents transcending the limits of lawful authority, even when acting in the name and wielding the force of the government.” By this language, the states were put on notice that all types of state legislation, whether dealing with procedural or substantive rights, were now subject to the scrutiny of the Court when questions of essential justice were raised.
What induced the Court to overcome its fears of increased judicial oversight and of upsetting the balance of powers between the Federal Government and the states was state remedial social legislation, enacted in the wake of industrial expansion, and the impact of such legislation on property rights. The added emphasis on the Due Process Clause also afforded the Court an opportunity to compensate for its earlier nullification of much of the privileges or immunities clause of the Amendment. Legal theories about the relationship between the government powers and private rights were available to demonstrate the impropriety of leaving to the state legislatures the same ample range of police power they had enjoyed prior to the Civil War. In the meantime, however, the SlaughterHouse Cases and Munn v. Illinois had to be overruled at least in part.
About twenty years were required to complete this process, in the course of which two strands of reasoning were developed. The first was a view advanced by Justice Field in a dissent in Munn v. Illinois,69 namely, that state police power is solely a power to prevent injury to the “peace, good order, morals, and health of the community.”70 This reasoning was adopted by the Court in Mugler v. Kansas,71 where, despite upholding a state alcohol regulation, the Court held that “[i]t does not at all follow that every statute enacted ostensibly for the promotion of [public health, morals or safety] is to be accepted as a legitimate exertion of the police powers of the state.” The second strand, which had been espoused by Justice Bradley in his dissent in the Slaughter-House Cases,72 tentatively transformed ideas embodying the social compact and natural rights into constitutionally enforceable limitations upon government.73 The consequence was that the states in exercising their police powers could foster only those purposes of health, morals, and safety which the Court had enumerated, and could employ only such means as would not unreasonably interfere with fundamental natural rights of liberty and property. As articulated by Justice Bradley, these rights were equated with freedom to pursue a lawful calling and to make contracts for that purpose.74
Having narrowed the scope of the state’s police power in deference to the natural rights of liberty and property, the Court proceeded to incorporate into due process theories of laissez faire economics, reinforced by the doctrine of Social Darwinism (as elaborated by Herbert Spencer). Thus, “liberty” became synonymous with governmental non-interference in the field of private economic relations. For instance, in Budd v. New York,75 Justice Brewer declared in dictum: “The paternal theory of government is to me odious. The utmost possible liberty to the individual, and the fullest possible protection to him and his property, is both the limitation and duty of government.”
Next, the Court watered down the accepted maxim that a state statute must be presumed valid until clearly shown to be otherwise, by shifting focus to whether facts existed to justify a particular law.76 The original position could be seen in earlier cases such as Munn v. Illinois,77 in which the Court sustained the legislation before it by presuming that such facts existed: “For our purposes we must assume that, if a state of facts could exist that would justify such legislation, it actually did exist when the statute now under consideration was passed.” Ten years later, however, in Mugler v. Kansas,78 rather than presume the relevant facts, the Court sustained a statewide anti-liquor law based on the proposition that the deleterious social effects of the excessive use of alcoholic liquors were sufficiently notorious for the Court to be able to take notice of them.79 This opened the door for future Court appraisals of the facts that had induced the legislature to enact the statute.80