
The laws that govern a state's residents are a complex and evolving area of legislation. While the US Constitution does not explicitly state that laws must apply to all citizens, it does imply that certain groups are subject to the same laws. For example, Article 4 of the Constitution prohibits individual states from having different laws based on the state a person is from. However, there are exceptions, such as in the case of Heart of Atlanta v. United States, where hotels were considered part of interstate commerce, and thus subject to federal jurisdiction. This complexity is further highlighted by the Full Faith and Credit Clause, which requires states to recognize each other's court judgments, but not statutes, and the right to travel, which states cannot impair. These factors create a dynamic landscape where states must balance their policy innovations with the rights of their citizens and those of other states.
| Characteristics | Values |
|---|---|
| Can states have different laws for residents of other states? | Article 4 of the US Constitution states that laws cannot be different for people from one state to another. However, there are exceptions for certain groups. |
| Can states prohibit residents of other states from entering? | No, as this would impair the right to travel, which is recognized by the US. However, states can impose quarantine measures for public health reasons. |
| Can states have different laws for their own residents? | States can pass statutes that apply only to their own residents. For example, a state can require residents to live in the state for a certain period before they can vote or hold office. |
| Do states have to recognize the laws of other states? | The Full Faith and Credit Clause requires states to recognize the court judgments of other states as conclusive, but they can use different remedies to enforce them. |
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What You'll Learn
- States cannot have different laws for people from another state
- States can require residence for a given time before a citizen can vote
- States must allow citizens of other states to sue and defend in their courts
- States can deny entry to residents of other states in quarantine
- States cannot deny entry to vaccinated people from other states

States cannot have different laws for people from another state
In the United States, states cannot have different laws for people from another state. This is supported by Article IV of the US Constitution, which states that there cannot be different laws for people from one state versus another. This is further supported by the Full Faith and Credit Clause, which requires states to recognize the laws and court judgments of other states. For example, in the case of Mills v. Duryee (1813), the Supreme Court ruled that each state must recognize the court judgments of other states as conclusive.
However, this does not mean that all laws are uniform across the country. States have the power to regulate behaviour within their territory and confer legal status, such as marriage or parenthood. In the case of Obergefell v. Hodges (2015), the Supreme Court held that the Due Process and Equal Protection provisions of the Constitution's Fourteenth Amendment required same-sex marriage to be legalized across the country, despite some states previously not recognizing this type of marriage.
Additionally, states cannot discriminate against citizens of other states in certain areas. For example, the right to sue and defend in the courts is a fundamental privilege of citizenship that must be allowed by each state to the citizens of all other states, regardless of their residency. Similarly, states may not prohibit citizens of other states from entering, as this would violate the right to travel, which is recognized by the US Constitution.
While states cannot have different laws specifically targeting people from another state, they do have some autonomy in creating and enforcing laws within their territory, as long as they do not infringe on the rights guaranteed to all citizens by the US Constitution.
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States can require residence for a given time before a citizen can vote
In the United States, the right to vote is generally reserved for citizens and permanent legal residents. Each state may have its own specific eligibility requirements, but federal law mandates that no state can impose residency requirements of longer than 30 days before an election. This means that a citizen of another state who moves to a new state must reside in the new state for at least 30 days before they can vote there.
The definition of residency can vary by state, but it generally refers to an individual's physical presence in a jurisdiction and their intention to remain there. For example, service members and their families can vote wherever they are, and their voting residence is typically the same address listed on their Leave and Earnings Statement, which is used for state tax purposes. However, if a service member or their family member changes their legal residence or domicile, they must re-establish a physical presence in that state according to its residency laws.
In some cases, U.S. citizens born overseas who have never resided in the U.S. may be eligible to vote absentee in certain states. Additionally, some states are working to pass legislation to allow citizens born overseas who have never established residency in the U.S. to vote in the state where their parents are eligible. It is important to note that voting rights vary by state, and each state has its own specific laws and requirements.
While states can require residence for a given time before allowing citizens to vote, it is important to distinguish between citizens of different states and non-citizens. Non-citizens, including permanent legal residents, are generally not permitted to vote in federal, state, and most local elections. However, each state has its own rules, and it is essential to refer to the specific laws and requirements of one's state regarding voting eligibility.
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States must allow citizens of other states to sue and defend in their courts
The right to sue and defend in court is a fundamental privilege of citizenship. States must allow citizens of other states to sue and defend in their courts to the same extent that they allow their own citizens. This is a constitutional requirement, and it is satisfied if non-residents are given access to the courts of the state on reasonable and adequate terms for enforcing their rights.
For example, in Parden v. Terminal Railway, the Court ruled that employees of a state-owned railroad could sue the state for damages under the Federal Employers' Liability Act. In another case, the Supreme Court upheld a state statute of limitations that prevented a non-resident from suing in the state's courts after the time for the suit had expired in the place where the cause of action arose.
The Eleventh Amendment grants sovereign immunity to states, but this does not extend to subdivisions or establishments such as counties, cities, or towns. A state may waive its immunity in its own courts without consenting to a suit in a federal court. For example, in Port Authority Trans-Hudson Corp. v. Feeney, an expansive consent to "suits, actions, or proceedings of any form or nature at law, in equity, or otherwise" was deemed too ambiguous and general to waive immunity in a federal court.
Cases filed in a state court can be removed to a federal court when there is federal question jurisdiction or when there is diversity jurisdiction and no defendant resides in the state in which the action was originally brought. Diversity jurisdiction applies in cases between corporate or individual citizens of different states.
State and federal courts differ in several ways, including jury size, jury composition, and unanimity requirements for verdicts.
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States can deny entry to residents of other states in quarantine
In the United States, Article 4 of the Constitution states that laws cannot differentiate between people from one state and another. However, this does not prevent states from passing laws that apply only to their residents. For example, a state may require residents of other states to undergo a period of quarantine upon arrival, while not imposing the same restriction on returning residents. This was seen during the COVID-19 pandemic, when multiple states implemented restrictions on interstate travel, including mandatory quarantines for out-of-state travellers.
Indeed, the Supreme Court has generally upheld previous quarantines for public health reasons, imposed under a state’s police power. For instance, in Compagnie Française de Navigation à Vapeur v. Board of Health of State of Louisiana, the Court upheld a New Orleans ordinance prohibiting both domestic and foreign travellers from entering the state due to a yellow fever outbreak. The Court has also supported state laws that give residents preference over non-residents in certain situations, such as in hiring for work on oil and gas pipelines within the state.
However, it is important to note that courts have also struck down quarantines when the state did not have a reasonable basis to suspect that an individual was exposed or infected. Additionally, federal statutes prohibit conspiracies to deprive any person of rights or privileges secured by state laws, and punish infractions by individuals of the right of citizens to reside peacefully in the several states and to have free ingress into and egress from such states. This means that while states can pass laws that apply only to their residents, they cannot infringe on the rights of citizens of other states to reside and move freely.
In summary, while states can deny entry to residents of other states in quarantine, they must do so in a way that does not discriminate based on state citizenship and does not infringe on the fundamental rights of citizens.
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States cannot deny entry to vaccinated people from other states
The concept of vaccine passports has raised ethical questions about data privacy and potential discrimination against the unvaccinated. However, there is currently no law in any state that prevents businesses from denying entry to unvaccinated people. In fact, businesses have been known to require vaccine passports for entry, especially for air travel. For example, the United States has allowed air travelers from other countries, but only if they can show proof of vaccination.
Despite this, there are some states that have orders in place that prevent businesses from mandating vaccine passports. For instance, Texas has ordered that no government agency or private entity receiving government funds can require individuals to provide proof of COVID-19 vaccination. However, this does not include nursing homes and assisted-living facilities. On the other hand, Florida has a broader order that simply states that businesses in the state cannot impose these requirements.
While there is no federal law that explicitly states that states cannot deny entry to vaccinated people from other states, there are statutes that prohibit conspiracies to deprive any person of rights or privileges secured by state laws. Additionally, the right to sue and defend in the courts is a privilege of citizenship that must be allowed by each state to the citizens of all other states. This means that a nonresident must be given access to the courts of a state on reasonable and adequate terms for enforcing their rights.
Furthermore, there is a political exception to the clause that allows states to require residence within its limits for a given time before a citizen of another state can exercise certain rights, such as the right to suffrage or hold office. However, this exception does not apply to private and personal rights, such as the right to sue or defend in court. Therefore, it can be inferred that states cannot deny entry to vaccinated people from other states, as this would violate the individual's right to free ingress and egress between states and their right to access the courts.
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Frequently asked questions
States cannot have different laws for residents and non-residents. However, states can require residents of other states to meet certain conditions, such as a period of residence, before they can exercise certain rights, such as voting.
No, a state cannot have a blanket "no entry" law prohibiting residents of another state from entering. However, narrower laws, such as quarantine requirements, may be permissible if they can pass constitutional scrutiny.
Yes, states can have different laws for citizens and non-citizens. For example, states can confer legal status, such as marriage or parenthood, that may not be recognized in other states.























