The Ninth Amendment has been invoked to support several rights the Constitution never spells out: the right to privacy, the right to marry, the right to raise your children, the right to private intimate conduct, and the right to travel between states. These are the most cited examples of the 9th Amendment at work. In every one of them, courts leaned on the amendment as a reminder that unlisted rights exist, then anchored the actual ruling in other provisions, most often the Fourteenth Amendment’s Due Process Clause.
What the Amendment Says in One Sentence
The full text reads: “The enumeration in the Constitution, of certain rights, shall not be construed to deny or disparage others retained by the people.”1Cornell Law Institute. Ninth Amendment In plain terms, the fact that the Bill of Rights lists specific freedoms does not mean those are the only freedoms Americans have. That single sentence is why the examples below exist as constitutional rights at all, even though none of them appear anywhere in the document.
The Right to Privacy
Privacy is the example most closely tied to the Ninth Amendment. The word never appears in the Constitution, but in Griswold v. Connecticut (1965) the Supreme Court struck down a state law banning contraceptive use by married couples. Justice Douglas’s majority opinion described “penumbras, formed by emanations” from the First, Third, Fourth, and Fifth Amendments that together implied a right to marital privacy. Justice Goldberg’s concurrence relied more directly on the Ninth Amendment, arguing that its text confirmed the Framers believed fundamental rights existed beyond the first eight amendments.2Cornell Law Institute. Ninth Amendment Current Doctrine
Griswold gave the Ninth Amendment real weight in modern constitutional law for the first time. Eisenstadt v. Baird (1972) then extended contraception access to unmarried people, and the privacy framework shaped decades of decisions about personal autonomy. As the doctrine developed, the Fourteenth Amendment’s Due Process Clause became the primary tool for enforcing privacy against state governments.3Legal Information Institute. 14th Amendment, U.S. Constitution
The Right to Marry
Marriage appears nowhere in the Constitution, yet the Supreme Court has treated it as a fundamental right in more than a dozen cases. Loving v. Virginia (1967) struck down state bans on interracial marriage, calling the freedom to marry “one of the vital personal rights essential to the orderly pursuit of happiness by free men.” The Court grounded that holding in both the Due Process Clause and the Equal Protection Clause of the Fourteenth Amendment.
Nearly fifty years later, Obergefell v. Hodges (2015) extended the right to same-sex couples, holding that the Fourteenth Amendment requires every state to license and recognize their marriages.4Cornell Law School Legal Information Institute. Obergefell v. Hodges Neither case rested directly on the Ninth Amendment, but both fit its logic. Marriage is not listed in the Constitution, and yet it is so embedded in American life that courts treat it as beyond the government’s power to deny.
The Right to Raise Your Children
Parental authority over children’s upbringing has been protected since the 1920s. Meyer v. Nebraska (1923) struck down a state law forbidding schools from teaching foreign languages, holding that the Fourteenth Amendment’s guarantee of “liberty” includes “the right of the individual to… establish a home and bring up children.”5Justia. Meyer v. Nebraska, 262 U.S. 390 (1923) Two years later, Pierce v. Society of Sisters (1925) invalidated an Oregon law requiring all children to attend public schools.
The modern anchor is Troxel v. Granville (2000), where the Court declared that “the Due Process Clause of the Fourteenth Amendment protects the fundamental right of parents to make decisions concerning the care, custody, and control of their children.”6Justia. Troxel v. Granville, 530 U.S. 57 (2000) The case involved a Washington law that let anyone petition for visitation rights over a parent’s objection. The Court found the statute too broad and reinforced a presumption that parents decide who spends time with their children.
The Right to Private Intimate Conduct
Lawrence v. Texas (2003) struck down a Texas law criminalizing consensual sexual conduct between same-sex adults. The Court held that “the liberty protected by the Constitution allows homosexual persons the right to choose to enter upon relationships in the confines of their homes and their own private lives and still retain their dignity as free persons.”7Justia. Lawrence v. Texas, 539 U.S. 558 (2003) The decision rested on the Due Process Clause of the Fourteenth Amendment and explicitly overruled Bowers v. Hardwick (1986), which had reached the opposite conclusion just seventeen years earlier.
Lawrence shows how the understanding of unenumerated rights shifts over time. Nobody in 1791 was compiling a list that included private consensual conduct. By 2003 the Court concluded that personal liberty covers exactly that kind of intimate choice, using the reasoning line that began with Griswold.
The Right to Travel
Freedom to move between states is one of the oldest recognized unenumerated rights. The Articles of Confederation had explicitly protected “free ingress and regress to and from any other State.” That language disappeared when the Constitution replaced the Articles, but the right survived.
Saenz v. Roe (1999) identified three components: the right to enter and leave any state, the right to be treated as a welcome visitor while temporarily in another state, and the right of new residents to receive the same benefits as long-time citizens.8Constitution Annotated, Congress.gov. Right to Travel and Privileges and Immunities Clause The Privileges and Immunities Clause of Article IV supports the second. The Fourteenth Amendment’s Privileges or Immunities Clause supports the third. The first, the basic freedom to cross state lines, has no clear textual home, and that is exactly the gap the Ninth Amendment was written to cover.
Courts have used the right to travel to strike down durational residency requirements, including welfare waiting periods and reduced benefits for recent arrivals. States can still regulate movement for public safety and other legitimate reasons, but they cannot penalize people for moving or visiting.9Constitution Annotated, Congress.gov. Interstate Travel as a Fundamental Right
How the Amendment Actually Works in Court
Here is the practical limit behind every example above: no Supreme Court majority has ever struck down a law based on the Ninth Amendment alone. Even Justice Goldberg’s Griswold concurrence “disclaimed any belief that the Ninth Amendment constitutes an independent source of right protected from infringement by either the states or the Federal Government.”10Constitution Annotated, Congress.gov. Ninth Amendment Doctrine The amendment functions as an interpretive guide. It tells courts that constitutional silence about a right is not the same as constitutional rejection of it.
You cannot walk into a courtroom, point to the Ninth Amendment, name a freedom you believe you have, and expect a judge to enforce it on that basis. Courts require any claimed right to be grounded in constitutional text, historical tradition, or precedent. The Ninth Amendment supports the claim that unlisted rights exist. The Fourteenth Amendment’s Due Process Clause does most of the actual work of enforcing them.
How Dobbs Changed the Landscape
Dobbs v. Jackson Women’s Health Organization (2022) narrowed the path considerably. In overturning Roe v. Wade, the majority emphasized that unenumerated rights must be “deeply rooted in this Nation’s history and tradition” to qualify for constitutional protection, a test the Court had earlier formalized in Washington v. Glucksberg (1997). The Dobbs opinion signaled skepticism toward expansive readings of unenumerated rights and moved the Court away from the penumbra reasoning that Griswold introduced.10Constitution Annotated, Congress.gov. Ninth Amendment Doctrine For any unenumerated right not yet firmly established in Supreme Court precedent, the road to recognition became significantly harder after Dobbs. Justice Thomas’s concurrence suggested reconsidering other unenumerated-rights decisions, though the majority opinion did not adopt that position.
Ninth Amendment vs. Tenth Amendment
The two amendments sit next to each other and often get confused, but they do different jobs. The Ninth reserves unenumerated rights to the people as individuals. The Tenth reserves powers not granted to the federal government to the states or to the people. One is about personal liberty; the other is about the structure of government.
The distinction matters when you are figuring out which to invoke. A challenge to a federal law as exceeding Congress’s authority is a Tenth Amendment argument. A challenge to a law as violating a personal freedom the Constitution does not name is closer to a Ninth Amendment argument. In United Public Workers v. Mitchell (1947), the Court addressed both together and held that when the federal government acts under a power the Constitution actually grants, objections based on rights “reserved by the Ninth and Tenth Amendments must fail.”2Cornell Law Institute. Ninth Amendment Current Doctrine The Ninth Amendment does not override the specific powers the Constitution gives Congress. It protects personal freedoms in the space where the government has no granted authority.