The Privileges and Immunities clause is one of the U.S. Constitution’s safeguards against states unfairly favoring their own citizens over citizens of other states. Found in Article IV, Section 2, Clause 1, it plays an important role when Americans cross state lines to work, conduct business, own property, use courts, or exercise other protected rights. Its basic purpose is to help the United States function as one nation rather than as separate states that can freely disadvantage outsiders.
The rule does not require states to treat residents and nonresidents identically in every situation. Courts first ask whether the unequal treatment affects a sufficiently important privilege, and states may sometimes justify a difference with a substantial reason closely connected to their objective. Understanding that limitation is essential because the clause protects interstate equality, not a universal right to receive every benefit offered to local residents.
Short answer: The clause generally prevents a state from discriminating against citizens of other states in fundamental matters such as earning a living, accessing courts, owning property, and receiving substantially equal tax treatment. States may still distinguish between residents and nonresidents when the distinction involves an unprotected activity or is supported by a substantial, closely related justification.
| Quick fact | What it means |
| Constitutional location | Article IV, Section 2, Clause 1 |
| Main purpose | Prevent unjustified state discrimination against citizens of other states. |
| Also called | The Comity Clause |
| Common protected interests | Employment, occupations, property, court access, certain tax protections |
| Does it require absolute equality? | No |
| Applies to corporations? | Generally no |
| Same as the Fourteenth Amendment clause? | No, the Fourteenth Amendment uses “Privileges or Immunities” and serves a different function. |
What Is the Privileges and Immunities Clause?
Article IV states that citizens of each state are entitled to the privileges and immunities of citizens in the other states. In practical terms, this means that a person from Pennsylvania entering New York, for example, cannot automatically be treated as an inferior class of citizen merely because the person lives elsewhere. Cornell Law School’s Legal Information Institute publishes the full text of Article IV, Section 2, which entitles the citizens of each state to all privileges and immunities of citizens in the several states.
The clause has roots predating the Constitution itself. The Articles of Confederation contained a similar provision intended to promote movement, trade,privileges and Immunities Clause, and friendly relations among residents of the states, and that provision became the direct historical predecessor of Article IV’s protection. This history helps explain why modern cases often focus on whether state discrimination threatens the ability of Americans to participate in the nation’s economic and civic life across state lines.
Readers interested in the broader role of government, citizenship, and political institutions can also explore Writfy’s political science education and global issues guide.
What Rights Does Article IV Protect?
The Constitution does not provide a complete list of every protected privilege or immunity. Courts instead examine whether the right or activity is sufficiently fundamental to interstate harmony and the functioning of the country as a unified nation. Over time, several recurring categories have received protection under Article IV.
Protected interests may include:
- Pursuing a common occupation or livelihood. States generally cannot exclude citizens of other states from ordinary employment or professional opportunities simply because they are nonresidents.
- Access to state courts. Nonresidents must receive reasonable and adequate access to state courts to sue, defend themselves, and enforce legal rights.
- Owning and transferring property. Property ownership and disposition have historically been identified among the important rights connected with interstate equality.
- Substantially equal tax treatment. A state generally cannot place substantially heavier tax burdens on nonresidents merely because they live elsewhere.
- Interstate movement and treatment as a visitor. The Supreme Court has connected Article IV with the right of a citizen visiting another state to be treated as a welcome visitor rather than as an outsider without ordinary protections.
Employment is particularly important in modern Article IV cases. The Supreme Court has repeatedly recognized the ability to pursue a trade, profession, or “common calling” as an interest central to national economic unity. That does not prevent a state from imposing legitimate licensing standards, but residency alone cannot automatically serve as a barrier when the state lacks a constitutionally adequate justification.
How Do Courts Determine Whether the Clause Was Violated?
A case does not automatically become unconstitutional simply because a state treats residents and nonresidents differently. Courts begin by determining whether the discrimination burdens a privilege sufficiently fundamental to fall within Article IV. If the underlying activity is not constitutionally protected by the clause, the Article IV challenge may end there.
When a protected interest is involved, the Supreme Court’s doctrine generally asks two major questions:
- Does the state have a substantial reason for treating nonresidents differently?
- Does the discrimination bear a substantial relationship to that objective?
The state therefore needs more than a preference for helping its own residents. The justification must meaningfully connect the nonresident classification to the problem the state is attempting to solve, and Supreme Court cases have also considered whether outsiders are a particular source of the problem being addressed. An excessively broad residency rule may fail even when the government’s underlying objective is legitimate.
When Can States Treat Residents and Nonresidents Differently?
The Comity Clause does not make residency classifications universally unconstitutional. Some differences reflect the basic fact that the United States consists of individual states with their own governments, services, resources, and political systems. The Supreme Court has therefore distinguished fundamental interstate rights from activities that states may reserve for residents or regulate differently.
Voting provides a straightforward example because states may generally require state residency for participation in their elections and may impose appropriate qualifications for public office. Recreational activities can also receive different treatment, as demonstrated by Baldwin v. Fish and Game Commission of Montana, where the Supreme Court upheld substantially higher elk-hunting license fees for nonresidents. The Court concluded that recreational elk hunting was not sufficiently fundamental to the vitality of the nation to receive Article IV protection.
That result should not be read as permission for states to impose any residency distinction they choose. Commercial activity involving a person’s livelihood can receive much stronger protection than recreational access to a state resource, and discriminatory taxation or professional restrictions can also trigger constitutional scrutiny. The legal question therefore depends heavily on what activity is affected and why the government has chosen to distinguish residents from outsiders.
Major Article IV Cases
Several Supreme Court decisions help explain how Article IV operates in practice. Together, these cases show that the analysis is highly dependent on the particular right, the type of discrimination, and the government’s justification.
| Case | Main significance |
| Corfield v. Coryell (1823) | Supplied an influential early description of privileges considered fundamental |
| Toomer v. Witsell (1948) | Invalidated severe discrimination against nonresident commercial shrimpers |
| Baldwin v. Fish and Game Commission of Montana (1978) | Upheld higher nonresident recreational elk-hunting fees |
| Hicklin v. Orbeck (1978) | Struck down an Alaska resident hiring preference connected to oil and gas employment |
| United Building & Construction Trades Council v. Mayor of Camden (1984) | Applied Article IV scrutiny to a municipal resident hiring preference |
| Supreme Court of New Hampshire v. Piper (1985) | Invalidated a residency requirement for state bar admission |
| Saenz v. Roe (1999) | Clarified different constitutional aspects of interstate travel, including Fourteenth Amendment protection for new residents |
Toomer v. Witsell
South Carolina imposed a dramatically higher commercial shrimping license fee on nonresidents than on residents. The Supreme Court held that commercial shrimping was a common calling protected by Article IV and concluded that the severe discrimination was not adequately connected to the state’s asserted conservation concerns. Toomer became particularly important because it articulated the requirement that discrimination have a substantial reason and a close relationship to that reason.
United Building & Construction Trades Council v. Mayor of Camden
Camden, New Jersey, adopted a policy favoring city residents for work connected with city-funded construction projects. The Supreme Court held that a municipal rule can fall within Article IV and recognized employment by private contractors on public projects as sufficiently important to trigger Article IV analysis. The Court then sent the case back for further consideration of whether Camden had an adequate substantial reason for its discriminatory rule.
Supreme Court of New Hampshire v. Piper
New Hampshire limited admission to its state bar to residents. The Supreme Court concluded that practicing law was a protected occupation and that the state’s reasons did not justify excluding otherwise qualified nonresident lawyers. The case remains a strong illustration of how professional licensing can violate Article IV when residency is used as a barrier unrelated to legitimate professional qualifications.
Article IV vs. the Fourteenth Amendment: What Is the Difference?
One of the most common sources of confusion is that the Constitution contains two similarly named provisions. Article IV contains the Privileges and Immunities Clause, while Section 1 of the Fourteenth Amendment contains the Privileges or Immunities Clause. The single-word difference is small grammatically, but the two provisions have developed very different constitutional roles.
| Feature | Article IV | Fourteenth Amendment |
| Wording | “Privileges and Immunities” | “Privileges or Immunities” |
| Primary concern | Discrimination against citizens of other states | Rights associated with U.S. citizenship against state interference |
| Typical comparison | State residents vs. citizens of other states | State government vs. U.S. citizen |
| Major modern use | Employment, occupations, courts, taxes, interstate equality | Limited national-citizenship rights, including an aspect of interstate travel |
| Major historical case | Toomer v. Witsell | Slaughter-House Cases |
The Fourteenth Amendment provision was interpreted narrowly in the 1873 Slaughter-House Cases. The Supreme Court concluded that it primarily protects privileges connected with national citizenship rather than converting the full range of ordinary state civil rights into federally protected privileges or immunities. The Court has generally continued to leave Slaughter-House in place, although the Fourteenth Amendment clause remains relevant in limited contexts.
One important modern example is Saenz v. Roe. The Supreme Court explained that interstate travel covers three distinct rights. The first two are the right to enter and leave another state and the right of a temporary visitor to receive Article IV protections. The third is the right of a person who becomes a permanent resident to be treated like other citizens of the new state. The Court tied that third protection for newly arrived residents to the Fourteenth Amendment’s Privileges or Immunities Clause.
Does the Clause Apply to Corporations?
Article IV’s protection generally applies to citizens as natural persons rather than to corporations. Supreme Court precedent has long treated corporations as outside the protection of this particular clause because a corporation created under state law is not a “citizen” for Article IV Privileges and Immunities purposes in the same sense as an individual. Businesses may still have constitutional claims under other provisions, but Article IV itself generally does not supply corporations with this protection.
This distinction can matter when a residency-based law affects both individual workers and the companies employing them. An individual nonresident may potentially raise an Article IV claim even when the corporation involved cannot independently rely on the same clause. Other constitutional doctrines, including the Commerce Clause or Equal Protection Clause, may also become relevant depending on how a state law operates.
Practical Examples of How the Clause Works
A State Restricts a Profession to Residents
Suppose a state allows only its own residents to obtain a professional license even when applicants from neighboring states meet every education, examination, ethics, and experience requirement. If the profession qualifies as a protected common calling, the state would need a substantial justification for excluding nonresidents and would need to show that the residency restriction is closely connected to that objective. A simple desire to reserve lucrative work for local residents would generally raise serious Article IV concerns.
A City Gives Local Residents Preference for Private Construction Jobs
A city cannot necessarily avoid Article IV merely by making the discriminatory rule at the municipal level instead of the state level. United Building established that municipal action can be reviewed when it disadvantages out-of-state residents in a protected activity such as pursuing employment. The government may attempt to justify the preference, but it still faces the constitutional requirement to establish an adequate relationship between the discrimination and the problem it seeks to address.
A State Charges Nonresidents More
Charging outsiders more does not automatically violate the Constitution. Courts examine what the charge relates to, whether the underlying activity receives Article IV protection, and whether a meaningful justification exists for the difference. A higher recreational hunting fee may survive, while substantially discriminatory taxes or charges affecting an ordinary livelihood can face much stronger scrutiny.
These distinctions also show why the everyday word “privilege” should not automatically be equated with a constitutional privilege or immunity. A government program may call something a privilege without making it a fundamental interstate right protected by Article IV. For a separate example involving policy-based privileges, Writfy’s conjugal visit guide explains how private family visitation in prisons depends on correctional rules rather than a single nationwide entitlement.
Why the Clause Still Matters
Americans routinely cross state borders for jobs, professional opportunities, business, education, property transactions, medical services, and other activities. Article IV limits the ability of states to turn those borders into barriers that protect local residents from legitimate interstate competition. Its continuing importance therefore lies as much in the constitutional structure of the Union as in the individual rights asserted in a particular lawsuit.
The clause also illustrates an important principle of federalism. States retain significant authority to regulate activities within their borders, but that authority exists within a national constitutional system that restricts unjustified discrimination against citizens of other states. Courts must balance both ideas rather than assuming either unlimited state power or absolute equality between residents and nonresidents.
The Bottom Line
The Privileges and Immunities The clause protects the idea that crossing a state line should not make an American a second-class citizen in matters fundamental to national unity. It has been especially important in disputes involving employment, professional licensing, court access, property, taxation, and interstate movement, while allowing some legitimate distinctions involving residents and nonresidents. The central question is usually whether a protected interstate interest is burdened and, if so, whether the state has a substantial and appropriately connected reason for doing so.
Frequently Asked Questions
What does the clause mean in simple terms?
It generally means that a state cannot treat citizens from other states as inferior outsiders when they engage in certain fundamental activities. Protected areas have included earning a livelihood, accessing courts, privileges and the Immunities clause holding property, and receiving substantially equal treatment in certain tax matters. The clause promotes interstate equality while still allowing justified differences between residents and nonresidents.
Where is the clause found?
The clause is located in Article IV, Section 2, Clause 1 of the U.S. Constitution. Its text states that citizens of each state are entitled to the privileges and immunities of citizens in the several states. It is sometimes called the Comity Clause because of its role in promoting legal equality and cooperation across state borders.
Does the clause mean every state law must apply equally to residents and nonresidents?
No. The Supreme Court has repeatedly explained that Article IV does not require a state to provide every law, service, benefit, or recreational opportunity on exactly the same terms to everyone. The strongest protection arises when discrimination burdens an activity considered fundamental and the state cannot provide a sufficient justification.
Can a state favor its own workers?
Sometimes, but resident employment preferences can create constitutional problems because pursuing an occupation is a recognized Article IV interest. Cases involving Alaska pipeline hiring and Camden public construction demonstrate that governments cannot simply reserve ordinary employment opportunities for residents without adequate constitutional justification. Whether a particular policy survives depends on its purpose, scope, and connection to the problem the government claims to address.
Is the right to travel protected by this clause?
Article IV is connected with important aspects of interstate travel, particularly the right of a citizen temporarily present in another state to receive the protections afforded to citizens there. The Supreme Court has explained, however, that the broader constitutional right to travel has several components with different doctrinal foundations. The Fourteenth Amendment’s Privileges or Immunities Clause protects the right of a person who moves permanently to another state to be treated like other citizens of the new state.
Is the clause the same as equal protection?
No. Article IV specifically addresses certain forms of discrimination involving citizens of different states, while the Fourteenth Amendment’s Equal Protection Clause applies more broadly to persons within a state’s jurisdiction. A particular state law can potentially raise issues under more than one constitutional provision, but courts analyze each claim under its own doctrine and standard.
Can corporations use Article IV?
Generally, no. Supreme Court doctrine has long held that corporations are not citizens entitled to Article IV Privileges and Immunities protection in the same way natural persons are. A corporation may nevertheless challenge state action under other constitutional or statutory provisions when those rules apply.
