The Constitutional Foundations of Federalism and Liberty

The Constitution of the United States creates a complex dual sovereignty, dividing power between the national government and the several states. This structure was designed both to protect liberty and to empower governance. Yet, from the beginning, a fundamental question remained unanswered: how far would federal protection of individual rights extend against state action? For nearly a century, the answer was simple: the Bill of Rights restricted only the federal government. The states were free to structure their own criminal procedures, define their own freedoms of speech and press, and establish their own religious institutions as they saw fit, limited only by their own state constitutions. The doctrine of selective incorporation shattered that simple division, transforming the relationship between the citizen and the state by gradually applying nearly every provision of the Bill of Rights to state and local governments through the Fourteenth Amendment. This legal revolution redefined the balance between state sovereignty and individual liberty, creating a uniform national floor of civil rights while still allowing states to experiment and govern within their traditional spheres.

The tension between state power and federal rights was not an oversight by the Founders. It was a conscious compromise. The Anti-Federalists feared that a powerful central government would crush the liberty they had just fought to secure. The Federalists argued that a national government of limited, enumerated powers posed little threat. To secure ratification, the Federalists promised the Bill of Rights, but those first ten amendments were explicitly designed to constrain the new federal Congress, not the state legislatures.

The Marshall Court made this limitation explicit in Barron v. Baltimore (1833). John Barron, a wharf owner, sued the city of Baltimore for ruining his business by diverting streams during street construction, arguing that the city had taken his property without just compensation in violation of the Fifth Amendment. Chief Justice John Marshall wrote for a unanimous Court that the Fifth Amendment, like the rest of the Bill of Rights, was "intended solely as a limitation on the exercise of power by the government of the United States, and is not applicable to the legislation of the states." For Barron, the case was a loss. For American constitutional law, the case established a baseline: state sovereignty shielded state governments from federal Bill of Rights claims for the next eighty years.

The Fourteenth Amendment and the Challenge to State Sovereignty

The Civil War and the Reconstruction Amendments that followed fundamentally altered the constitutional landscape. The Thirteenth Amendment abolished slavery. The Fifteenth Amendment prohibited racial discrimination in voting. But it was the Fourteenth Amendment, ratified in 1868, that most directly challenged the power of the states. Its key provisions were aimed squarely at the institutions of state government that had enforced racial subjugation. Section One declares:

"No State shall make or enforce any law which shall abridge the privileges or immunities of citizens of the United States; nor shall any State deprive any person of life, liberty, or property, without due process of law; nor deny to any person within its jurisdiction the equal protection of the laws."

This language was a direct assault on the principle of Barron v. Baltimore. It explicitly limited the power of states to abridge fundamental rights. The drafters intended to nationalize the protection of basic civil liberties, particularly for the newly freed slaves who faced hostile state governments in the South. The question was not whether the Amendment restricted the states, but how much and through which clauses.

The Slaughter-House Cases and the Narrowing of Privileges or Immunities

The Supreme Court faced this question squarely in the Slaughter-House Cases (1873). At issue was a Louisiana law that granted a monopoly on slaughterhouse operations in New Orleans. Butchers excluded from the monopoly sued, arguing that the law abridged their "privileges or immunities" as citizens of the United States. In a 5-4 decision, the Court gutted the potential of the Privileges or Immunities Clause. Justice Samuel Miller distinguished between national citizenship and state citizenship, ruling that the clause only protected the few rights that owed their existence specifically to the federal government, such as the right to travel to the seat of government or the right to access federal courts. The vast majority of fundamental rights, including the right to pursue a trade, remained under the protection of the states. The dissenters, led by Justice Stephen Field, argued that the clause was intended to protect the fundamental rights of all citizens against state infringement, but their view did not prevail. By closing the door on the Privileges or Immunities Clause, the Court forced the future of civil liberties to rest on the Due Process Clause.

Substantive Due Process as the Vehicle for Incorporation

The Due Process Clause prohibits states from depriving "any person of life, liberty, or property, without due process of law." On its face, the clause seems procedural: it guarantees a fair process. However, the Supreme Court gradually developed the doctrine of substantive due process, which holds that the clause also protects certain fundamental rights from government interference, regardless of the procedures used. This opened the door to the idea that the "liberty" protected by the Fourteenth Amendment included the specific liberties enumerated in the Bill of Rights. If due process protects "liberty," and the Bill of Rights defines specific aspects of liberty, then the Due Process Clause should prevent states from infringing those rights. This logic launched the long, contentious project of incorporation.

Total Incorporation Versus Selective Incorporation: A Judicial Debate

The Court did not immediately embrace incorporation. For decades after the Fourteenth Amendment, the Justices struggled to define how much of the Bill of Rights applied to the states. Two competing theories emerged, and the debate between their advocates shaped the modern structure of American rights.

Justice Black and the Total Incorporation Theory

Justice Hugo Black argued for a straightforward approach. He believed that the framers of the Fourteenth Amendment intended the entire Bill of Rights to apply to the states. In his dissent in Adamson v. California (1947), Black marshaled historical evidence from congressional debates to argue that the Privileges or Immunities Clause was specifically designed to make the first eight amendments binding on the states. For Black, total incorporation offered a clear, text-based rule that would prevent judges from imposing their own values. He argued that partial, selective application invited judicial subjectivity. If a right was important enough to protect against Congress, he reasoned, it was important enough to protect against state legislatures.

Justice Cardozo and the "Ordered Liberty" Standard

Justice Benjamin Cardozo, writing for the majority in Palko v. Connecticut (1937), rejected the mechanical approach of total incorporation. He offered a more nuanced standard: the Court should only incorporate those rights that are "implicit in the concept of ordered liberty" and without which "neither liberty nor justice would exist." This standard distinguished between rights that were merely "formal" or "trivial" and those that were fundamental to the American system of justice. Cardozo suggested that the right to a jury trial in a civil case or the right to a grand jury indictment might be essential for federal justice but were not necessary for a fair state system. Palko formally adopted selective incorporation, a case-by-case, right-by-right approach that asked whether a specific guarantee was "fundamental" to liberty and justice. This standard would guide the Court for the rest of the century, allowing it to gradually absorb the Bill of Rights into the Fourteenth Amendment without adopting the rigid framework of total incorporation.

The Selective Incorporation Process in Action

Beginning in the 1920s and accelerating dramatically under the Warren Court in the 1960s, the Supreme Court selectively incorporated one provision after another. The process was neither swift nor uniform, but by the end of the twentieth century, almost every protection in the Bill of Rights had been made applicable to the states.

First Amendment Freedoms

The first steps toward incorporation came in the realm of free speech. In Gitlow v. New York (1925), Benjamin Gitlow was convicted under New York's criminal anarchy law for publishing a socialist manifesto. The Court upheld his conviction but, in a critical passage, announced that "freedom of speech and of the press which are protected by the First Amendment from abridgment by Congress are among the fundamental personal rights and 'liberties' protected by the due process clause of the Fourteenth Amendment from impairment by the States." This statement was obiter dicta—it was not essential to the ruling—but it signaled that the Court was ready to reconsider Barron v. Baltimore.

The incorporation of the First Amendment proceeded swiftly. In Near v. Minnesota (1931), the Court incorporated the freedom of the press, striking down a state law that allowed for prior restraint of "malicious" publications. De Jonge v. Oregon (1937) incorporated the right of peaceful assembly. Cantwell v. Connecticut (1940) incorporated the free exercise of religion. Everson v. Board of Education (1947) incorporated the Establishment Clause, holding that the Fourteenth Amendment forbade states from establishing a religion just as the First Amendment forbade Congress. By the end of the 1940s, the entire First Amendment applied to the states with the same force it applied to the federal government.

The Warren Court and the Criminal Procedure Revolution

The most dramatic expansion of incorporation occurred in the 1960s under Chief Justice Earl Warren. The Warren Court systematically incorporated the criminal procedure protections of the Fourth, Fifth, Sixth, and Eighth Amendments, fundamentally transforming state criminal justice systems. The Court justified these decisions on the grounds that state courts often lacked the resources, training, or inclination to provide fair procedures for indigent defendants and racial minorities.

  • Mapp v. Ohio (1961): Overruling Wolf v. Colorado, the Court incorporated the Fourth Amendment exclusionary rule, holding that evidence obtained through an illegal search and seizure could not be used in state court. The Court found that the right to privacy was "enforceable against the States through the Due Process Clause."
  • Gideon v. Wainwright (1963): In one of the most famous cases in American law, the Court unanimously held that the Sixth Amendment right to counsel was a fundamental right essential to a fair trial and required its application to the states. Clarence Earl Gideon, a poor man charged with breaking into a pool hall, had been forced to represent himself. The Court ruled that "lawyers in criminal courts are necessities, not luxuries."
  • Malloy v. Hogan (1964): The Court incorporated the Fifth Amendment privilege against self-incrimination, overruling Twining v. New Jersey. This decision also had the effect of applying the Miranda warnings to state interrogations a few years later.
  • Pointer v. Texas (1965): The Court incorporated the Sixth Amendment right to confront witnesses, guaranteeing criminal defendants the ability to cross-examine their accusers in state court.
  • Duncan v. Louisiana (1968): The Court incorporated the Sixth Amendment right to a jury trial in serious criminal cases, holding that trial by jury in criminal cases is "fundamental to the American scheme of justice."

By the end of the Warren era, nearly every criminal procedure provision of the Bill of Rights had been incorporated, establishing a uniform set of constitutional requirements that all state courts must follow. This represented a massive shift of power from the states to the federal judiciary and was a source of intense political and academic controversy.

The Federalism Counter-Argument: Laboratories of Democracy

The expansion of selective incorporation has always faced powerful criticism rooted in federalism. Justice John Marshall Harlan II, a consistent dissenter in the Warren Court incorporation cases, argued that the Court was overstepping its authority by imposing national standards on diverse state criminal justice systems. He argued that the Fourteenth Amendment did not "incorporate" the Bill of Rights but instead protected only those rights without which "liberty cannot exist." In his dissent in Duncan v. Louisiana, Harlan warned that the Court was "hardening a particular provincialism" and overriding the ability of states to experiment with their own procedures.

Justice Louis Brandeis, in a famous dissent in New State Ice Co. v. Liebmann (1932), celebrated the role of states as laboratories of democracy. He argued that "a single courageous state may, if its citizens choose, serve as a laboratory; and try novel social and economic experiments without risk to the rest of the country." Selective incorporation, critics argue, short-circuits this experimental function. When the Court incorporates a right, it imposes a one-size-fits-all standard that prevents states from developing alternative approaches. For example, states cannot experiment with different rules regarding exclusion of evidence or jury size to see what works best for their citizens. The trade-off is that uniformity comes at the cost of diversity and innovation in state law.

The Expansion and Limits of Selective Incorporation

The process of selective incorporation did not end with the Warren Court. The Burger, Rehnquist, and Roberts Courts continued the process, albeit at a slower pace and with a focus on different rights. The most significant incorporation decision in the modern era is McDonald v. Chicago (2010). In a 5-4 decision, the Court incorporated the Second Amendment right to keep and bear arms, applying the Heller decision to state and local governments. Justice Samuel Alito, writing for the plurality, used the same standard that had governed incorporation since Palko: the right to self-defense is "fundamental to the Nation's scheme of ordered liberty" and "deeply rooted in this Nation's history and tradition." The decision struck down Chicago's handgun ban and subjected all state and local firearms regulations to the same strict scrutiny that applies to federal laws. The incorporation of the Second Amendment was a powerful example of how selective incorporation can dramatically alter the balance between state regulatory power and individual rights.

In Timbs v. Indiana (2019), the Court unanimously incorporated the Eighth Amendment Excessive Fines Clause, ruling that the protection against excessive fines applies to the states. The Court held that the clause was "incorporated by the Due Process Clause of the Fourteenth Amendment because the right to be free from excessive fines is a fundamental right essential to our scheme of ordered liberty." The case involved the state of Indiana seizing a man's $42,000 Land Rover after he was convicted of selling a few hundred dollars' worth of heroin, and the Court found that the forfeiture was grossly disproportionate to the crime. The decision continued the tradition of using the Fourteenth Amendment to enforce the Bill of Rights against state overreach.

However, the process of incorporation is not complete. A few provisions of the Bill of Rights remain unincorporated. The Third Amendment, which prohibits the quartering of soldiers in private homes during peacetime, has never been applied to the states by the Supreme Court, though it is often assumed to be incorporated. The Fifth Amendment requirement of a grand jury indictment for serious crimes has been explicitly held to be unincorporated in Hurtado v. California (1884). States are free to use alternative methods, such as preliminary hearings, to bring charges. The Seventh Amendment right to a jury trial in civil cases involving more than $20 has also not been incorporated, meaning state civil procedures vary widely. These unincorporated provisions serve as reminders that the framers of the Fourteenth Amendment did not intend to blind the states to every provision of the first eight amendments.

Doctrinal Criticisms of Selective Incorporation

The doctrine of selective incorporation rests on a specific reading of the Fourteenth Amendment that has attracted sustained criticism from both conservative originalists and liberal textualists. Originalists, like the late Justice Antonin Scalia, have argued that selective incorporation lacks a firm textual foundation. The Due Process Clause speaks of "process," not substantive rights. Scalia famously argued that the clause "cannot be the basis for judicially imposing limits upon the states." Despite these philosophical reservations, Scalia voted to incorporate the Second Amendment in McDonald, demonstrating the powerful pull of the doctrine once it is established.

From the left, some scholars argue that the case-by-case approach of selective incorporation is too cautious and arbitrary. They contend that the Privileges or Immunities Clause was the intended vehicle for nationalizing rights and that the Court's decision to abandon it in the Slaughter-House Cases was a tragic error. They argue that a revived Privileges or Immunities Clause could provide a more coherent and comprehensive basis for protecting fundamental rights against state infringement, including rights not explicitly listed in the Bill of Rights, such as the right to travel, the right to vote, and the right to privacy. Justice Clarence Thomas has embraced this view in several cases, arguing that the Privileges or Immunities Clause, rather than the Due Process Clause, is the proper tool for incorporation. In his concurrence in McDonald v. Chicago, Thomas urged the Court to "take a fresh look at the Privileges or Immunities Clause" and apply it according to its original meaning.

A third criticism centers on the phrase "ordered liberty" itself. Critics argue that the standard is hopelessly vague, allowing unelected judges to define fundamental rights based on their own personal values. The debate over how to define "ordered liberty" has shifted over time. In the early twentieth century, it was used to justify economic liberties. In the mid-century, it focused on criminal procedure and free expression. Today, it is the battleground for debates over gun rights, privacy, and the death penalty. The flexibility of the standard is both its greatest strength and its greatest vulnerability.

The Modern Balance: National Standards, Local Governance

Selective incorporation established a national floor of civil liberties below which no state can fall. A state cannot establish a religion, censor political speech, deny a criminal defendant a lawyer, or impose cruel and unusual punishments, all because the Fourteenth Amendment makes the Bill of Rights binding on them. This national floor ensures basic uniformity across the country. A citizen traveling from New York to Texas carries the same basic constitutional protections. This uniformity was the central goal of the Reconstruction Congress that drafted the Fourteenth Amendment. They understood that state sovereignty could not be absolute, particularly when it came to the fundamental rights of citizens.

Yet, the balance remains dynamic. States possess significant authority to expand rights beyond the federal floor. The right to a jury trial in civil cases varies by state. State constitutions often provide broader protections for free speech, privacy, and equality than the federal Constitution as interpreted by the Supreme Court. This creates a federalism of rights in which states can serve as the laboratories of liberty that Justice Brandeis celebrated. A state supreme court can interpret its own constitution to provide more protection than the federal constitution, and that decision is unreviewable by the U.S. Supreme Court as long as it does not violate federal law. This vertical dialogue between state and federal courts enriches the development of constitutional law.

The modern challenge is to define the outer limits of state power in new areas. The incorporation of the Second Amendment has generated extensive litigation over state and local firearms regulations. The Court has yet to fully resolve questions about the level of scrutiny that applies to state gun laws or the scope of the right to carry firearms in public. The privacy rights recognized in Griswold v. Connecticut and Roe v. Wade were based on a theory of "substantive due process" closely related to incorporation. The reversal of Roe in Dobbs v. Jackson Women's Health Organization (2022) raised new questions about the future of unenumerated rights. If the right to abortion is not "deeply rooted in this Nation's history and tradition," what other rights might be returned to the states? The debate over incorporation and substantive due process is far from over.

Conclusion: The Enduring Legacy of Selective Incorporation

Selective incorporation stands as one of the Supreme Court's most consequential doctrinal achievements. It transformed the Bill of Rights from a set of restrictions on federal power to a comprehensive guarantee of individual liberty against all levels of government. By imposing national standards of justice on state criminal procedures, free expression, religious liberty, and firearms rights, the Court has steadily shifted the balance away from absolute state sovereignty and toward uniform national protection of individual rights. The process has rarely been smooth, and the debates over its legitimacy, scope, and methodology continue to divide judges, scholars, and citizens.

Yet, the doctrine itself is embedded in the fabric of American constitutional law. The question is no longer whether the Bill of Rights applies to the states, but how it should apply. The standard of "ordered liberty" remains the touchstone, guiding the Court as it confronts new challenges in an evolving society. The balance between state sovereignty and individual rights will never be permanently settled. Each generation must test the limits of liberty and authority, and selective incorporation provides the constitutional framework for that testing. The doctrine embodies a core insight of American federalism: state sovereignty must be respected, but it cannot be a shield for the violation of fundamental rights. The Constitution guarantees a minimum of justice for every citizen, in every state, and selective incorporation is the tool that makes that promise a reality. The ongoing dialogue between the states and the federal judiciary ensures that the balance remains dynamic, reflecting the enduring tension between local self-governance and national unity.