The Constitution protects almost everyone standing on U.S. soil, not just citizens. That single design choice drives the constitutional rights of non-citizens: the Fifth and Fourteenth Amendments guarantee due process and equal protection to any “person,” and the Supreme Court has enforced that wording for more than a century. A short list of rights is reserved for citizens by design, chiefly voting in federal elections, holding federal office, and serving on juries. Almost everything else in the Bill of Rights applies regardless of immigration status.
Due Process and Equal Protection Apply to “Persons”
The Fourteenth Amendment forbids any state to “deprive any person of life, liberty, or property, without due process of law” or “deny to any person within its jurisdiction the equal protection of the laws.”1Cornell Law School. U.S. Constitution – 14th Amendment The word is “person,” and the Supreme Court has taken it at face value.
In Zadvydas v. Davis (2001), the Court said that “once an alien enters the country, the legal circumstance changes, for the Due Process Clause applies to all persons within the United States, including aliens, whether their presence is lawful, unlawful, temporary, or permanent.”2Legal Information Institute. Zadvydas v. Davis An earlier ruling, Mathews v. Diaz (1976), put it just as plainly: “Even one whose presence in this country is unlawful, involuntary, or transitory is entitled to that constitutional protection.”3Constitution Annotated. Exclusion and Removal of Non-U.S. Nationals
In practical terms, this is the foundation. Government action against you has to follow fair procedures, and laws that single out non-citizens for unequal treatment can be challenged. It is why the rest of the rights below exist.
Speech, Religion, and Assembly
First Amendment freedoms extend to non-citizens. The Supreme Court held in Bridges v. Wixon (1945) that “freedom of speech and of press is accorded aliens residing in this country.”4Legal Information Institute. Bridges v. Wixon You can practice your religion, criticize the government, join a protest, and belong to a political or civic group on the same footing as a citizen.
Rights If You Are Arrested or Charged With a Crime
The criminal procedure protections in the Bill of Rights apply to any defendant in a U.S. criminal case, citizen or not.
Under the Sixth Amendment, a non-citizen charged with a crime has the right to a speedy public trial, an impartial jury, notice of the charges, the ability to confront witnesses, and the assistance of a lawyer.5Legal Information Institute. Sixth Amendment If you cannot afford a criminal defense attorney, the court must appoint one.
The Fifth Amendment right to remain silent applies. You cannot be forced to give testimony that could be used against you, and police must respect that during questioning.
The Fourth Amendment protects you from unreasonable searches. Officers generally need a warrant supported by probable cause to search a home. There is a long-standing exception at the border, where customs officers can conduct routine warrantless searches of people and items entering the country, but that exception has limits. Vehicle searches away from the physical border require at least reasonable suspicion, and inland searches must meet the same probable-cause standard that applies elsewhere.6Constitution Annotated. Searches Beyond the Border
Warning About Deportation Before a Guilty Plea
A non-citizen defendant has one protection a citizen does not need. In Padilla v. Kentucky (2010), the Supreme Court held that a criminal defense lawyer must advise a non-citizen client whether pleading guilty carries a risk of deportation. Where the law clearly makes deportation automatic for a specific conviction, the lawyer must give correct advice; where the consequences are uncertain, the lawyer must at least warn that the charge could carry immigration consequences.7Justia U.S. Supreme Court Center. Padilla v. Kentucky Failure to give that advice can be grounds to overturn the conviction.
Immigration Court Is a Different Story
This is the boundary most people don’t expect. Removal proceedings are classified as civil, not criminal, and the criminal right to an appointed lawyer does not carry over. Federal law gives non-citizens in removal proceedings the right to hire counsel, but explicitly at “no expense to the Government.”8Office of the Law Revision Counsel. 8 USC 1362 – Right to Counsel If you cannot afford an immigration attorney, no one will be appointed for you. Due process still applies to the proceeding itself, but the appointed-counsel guarantee stops at the courthouse door.
Public School and Emergency Medical Care
Two protections come up often enough that they’re worth naming directly, because both are commonly assumed to depend on status and neither does.
In Plyler v. Doe (1982), the Supreme Court ruled that states cannot deny free public K-12 education to children based on immigration status. Undocumented children are “persons” under the Fourteenth Amendment, and barring them from school violates equal protection absent a substantial state justification.9Justia U.S. Supreme Court Center. Plyler v. Doe Public schools cannot ask about a child’s immigration status or refuse to enroll them. Higher education is a different question: in-state tuition and financial aid rules vary by state, and federal student aid requires lawful status.
Under the Emergency Medical Treatment and Labor Act, any Medicare-participating hospital with an emergency department must screen and stabilize anyone with an emergency medical condition. The statute covers “any individual” regardless of citizenship, immigration status, or ability to pay.10Office of the Law Revision Counsel. 42 U.S. Code 1395dd – Examination and Treatment for Emergency Medical Conditions A hospital cannot delay screening to ask about payment and must stabilize the patient before discharge or transfer.11Centers for Medicare and Medicaid Services. Emergency Health Services for Undocumented Aliens The law covers stabilization only. Once you are stable, EMTALA’s obligation ends, and non-emergency Medicaid is generally unavailable to undocumented non-citizens.
Workplace Protections
Federal labor law protects workers based on the work, not the papers. The Department of Labor enforces Fair Labor Standards Act minimum-wage and overtime rules for all employees regardless of documentation, on the reasoning that wages for hours actually worked are simply owed.12U.S. Department of Labor. Effect of Hoffman Plastics Decision on Laws Enforced by the Wage and Hour Division OSHA workplace-safety protections likewise cover every worker.13U.S. Department of Labor. US Department of Labor Expands OSHA’s Ability to Protect All Workers
The National Labor Relations Board protects the right to organize, join a union, and take collective action regardless of immigration status.14National Labor Relations Board. Immigrant Worker Rights There is one significant limit. In Hoffman Plastic Compounds v. NLRB (2002), the Supreme Court ruled that the Board cannot award back pay to an undocumented worker for hours they would have worked but for an illegal firing, because doing so would conflict with federal immigration law.15Justia U.S. Supreme Court Center. Hoffman Plastic Compounds, Inc. v. NLRB The right to organize is intact; the remedies for undocumented workers are narrower.
Title VII of the Civil Rights Act prohibits employment discrimination based on national origin, including harassment tied to accent, cultural characteristics, or name, and employers have to keep the workplace free from ethnic slurs and similar hostile conduct.16eCFR. Part 1606 – Guidelines on Discrimination Because of National Origin
Civil Life: Contracts, Property, and Marriage
Non-citizens can sign contracts, sue and be sued, sign leases, form businesses, and enforce agreements in court. Federal law does not bar non-citizens from owning property, including real estate, though some states restrict ownership of certain property by non-citizens, especially agricultural land, so the rule in a specific state is worth checking.
Non-citizens can marry in the United States. State marriage laws generally do not require citizenship. Marrying a citizen does not automatically confer immigration status, and marrying solely to obtain an immigration benefit is a federal crime, but the right to marry is not conditioned on status.
Rights That Belong to Citizens Only
A small number of rights and eligibilities are reserved for citizens.
Voting in Federal Elections
Federal law makes it a crime for any non-citizen to vote in an election for President, Vice President, or a member of Congress, punishable by a fine, up to one year in prison, or both.17Office of the Law Revision Counsel. 18 USC 611 – Voting by Aliens A few local jurisdictions, including Washington, D.C. and some municipalities in Maryland, Vermont, and California, allow non-citizens to vote in certain local races such as school board or town council. Those programs do not touch federal elections.
Federal Office
The Constitution itself sets the qualifications. Representatives must have been citizens for at least seven years.18Constitution Annotated. Article I Section 2 Senators must have been citizens for nine. The presidency requires natural-born citizenship.19Constitution Annotated. Qualifications for the Presidency Congress cannot waive these.
Jury Service
Federal jurors must be U.S. citizens, at least 18, and residents of the judicial district for at least a year.20Office of the Law Revision Counsel. 28 USC 1865 – Qualifications for Jury Service State rules follow the same pattern.
Federal Civil Service Jobs
Under Executive Order 11935, only U.S. citizens and nationals can be appointed to competitive federal civil service positions. Agencies may hire non-citizens in rare cases where no qualified citizen is available, but the exception is narrow and further limited by appropriations rules that bar spending federal funds to employ non-citizens.21U.S. Office of Personnel Management. Employment FAQ – Do I Have to Be a US Citizen to Apply
Firearms
Federal law prohibits firearm and ammunition possession by two groups: anyone unlawfully present in the United States, and most people admitted on nonimmigrant visas such as tourist, student, and work visas.22Office of the Law Revision Counsel. 18 USC 922 – Unlawful Acts Narrow exceptions apply for nonimmigrant visa holders with a valid hunting license, foreign government officials, and those granted an Attorney General waiver. Lawful permanent residents are not covered by this prohibition and can generally possess firearms under the same rules as citizens.
Most Federal Public Benefits
Undocumented non-citizens are generally ineligible for programs like SNAP (food stamps), Supplemental Security Income, and non-emergency Medicaid. Lawful permanent residents may qualify for some programs after a waiting period, often five years. Refugees and asylees typically have broader access than other categories of non-citizens.
The Bottom Line
If you are physically present in the United States, the Constitution treats you as a person entitled to due process, equal protection, free speech and religion, and the criminal procedure guarantees of the Fourth, Fifth, and Sixth Amendments. Public schools cannot turn your children away, emergency rooms cannot turn you away, and labor and anti-discrimination laws cover the work you actually do. The rights citizens keep to themselves are specific and mostly political: casting a federal ballot, holding federal office, serving on a jury, most federal jobs, and, for some visa categories, possessing firearms. The most important gap to understand is in immigration court itself, where the proceeding is civil and no lawyer will be appointed if you cannot afford one.