How does the 14th Amendment protect freedom of religion? — A clear explainer

What freedom of religion means under the 14th Amendment

When people ask what freedom of religion means in constitutional law, they are referring to two related protections in the First Amendment: the Free Exercise Clause, which protects religious practice, and the Establishment Clause, which limits government endorsement of religion. Those First Amendment provisions operate against the federal government directly and, through incorporation, against state and local governments as well. This article uses the phrase freedom of religion to describe that combined set of protections and the limits they impose on public actors.

The legal mechanism that has made those First Amendment protections apply to states is the incorporation doctrine, which uses the 14th Amendment to extend selected Bill of Rights guarantees to state and local governments. For an accessible overview of how the Court describes that process, see the Legal Information Institute’s summary of the incorporation doctrine Incorporation doctrine overview.

In practice, describing freedom of religion under the 14th Amendment means two things. First, state and local laws and government actions cannot unduly limit sincere religious exercise. Second, government may not favor one religion over another or prefer religion over nonreligion. Courts sort those principles into Free Exercise and Establishment analyses and then apply doctrinal tests to the facts of each case.

Definitions: Free Exercise and Establishment Clauses

The Free Exercise Clause protects people and groups when they claim a law or government action burdens their religious practice. The Establishment Clause prevents government from acting in ways that establish religion or join a particular faith. Both clauses are short as text but broad in effect; courts build out their meaning through cases that interpret when and how the clauses apply.

How incorporation links the First and Fourteenth Amendments

The incorporation doctrine does not come from a single statute. Instead, the Supreme Court applied portions of the Bill of Rights against states incrementally, using the 14th Amendment as the constitutional vehicle for that process. That incremental case-by-case approach is why modern doctrines about religious freedom are grounded in a sequence of Supreme Court opinions rather than a single legislative act. For a concise legal overview of that history, the Legal Information Institute’s page on incorporation explains the judicial framework and its use of the 14th Amendment’s Due Process Clause Incorporation doctrine overview.

One of the first clear steps in applying religious protections to state action came in Cantwell v. Connecticut, where the Supreme Court considered whether state laws could criminalize certain forms of religious solicitation. The Court’s opinion treated the Free Exercise protection as sufficient to limit state action in that factual setting, marking the start of a judicial path to incorporation of religious protections against the states Cantwell v. Connecticut opinion.

The Cantwell decision matters because it shows incorporation unfolding by the Court’s judgments in particular cases. Rather than a single constitutional amendment process or statute expressly applying every First Amendment guarantee to the states, incorporation emerged through successive opinions that identified which protections the 14th Amendment made applicable to state and local governments.

Cantwell and the start of incorporation

One of the first clear steps in applying religious protections to state action came in Cantwell v. Connecticut, where the Supreme Court considered whether state laws could criminalize certain forms of religious solicitation. The Court’s opinion treated the Free Exercise protection as sufficient to limit state action in that factual setting, marking the start of a judicial path to incorporation of religious protections against the states Cantwell v. Connecticut opinion.

The Cantwell decision matters because it shows incorporation unfolding by the Court’s judgments in particular cases. Rather than a single constitutional amendment process or statute expressly applying every First Amendment guarantee to the states, incorporation emerged through successive opinions that identified which protections the 14th Amendment made applicable to state and local governments.

Everson and reinforcement of the principle

Everson v. Board of Education reinforced the incorporation approach for religion claims and clarified that the Establishment Clause also constrained state action in important ways. The Court in Everson treated both prohibitions on governmental establishment of religion and protections for religious exercise as central to how the First and Fourteenth Amendments interact Everson v. Board of Education opinion.

Together, Cantwell and Everson are often described as foundational because they set the framework courts use today: review the challenged government action, identify which clause applies, and then move to the doctrinal test that the Court has developed for that category of case. Those early opinions made clear that states could not ignore the First Amendment by pointing to state sovereignty alone.

How incorporation brought freedom of religion protections to the states

Cantwell and the start of incorporation

One of the first clear steps in applying religious protections to state action came in Cantwell v. Connecticut, where the Supreme Court considered whether state laws could criminalize certain forms of religious solicitation. The Court’s opinion treated the Free Exercise protection as sufficient to limit state action in that factual setting, marking the start of a judicial path to incorporation of religious protections against the states Cantwell v. Connecticut opinion.

The Cantwell decision matters because it shows incorporation unfolding by the Court’s judgments in particular cases. Rather than a single constitutional amendment process or statute expressly applying every First Amendment guarantee to the states, incorporation emerged through successive opinions that identified which protections the 14th Amendment made applicable to state and local governments.

Everson and reinforcement of the principle

Everson v. Board of Education reinforced the incorporation approach for religion claims and clarified that the Establishment Clause also constrained state action in important ways. The Court in Everson treated both prohibitions on governmental establishment of religion and protections for religious exercise as central to how the First and Fourteenth Amendments interact Everson v. Board of Education opinion.

Together, Cantwell and Everson are often described as foundational because they set the framework courts use today: review the challenged government action, identify which clause applies, and then move to the doctrinal test that the Court has developed for that category of case. Those early opinions made clear that states could not ignore the First Amendment by pointing to state sovereignty alone.

Key Supreme Court cases that shape freedom of religion under the 14th Amendment

Trinity Lutheran and access to public benefits

In Trinity Lutheran Church of Columbia v. Comer, the Court considered whether a state program that provided grants for playground resurfacing could exclude a religious organization solely because it was religious. The Court held that a categorical exclusion of a religious entity from a neutral public benefit program raised serious constitutional concerns about denying equal access based on religion Trinity Lutheran opinion. For additional analysis, see coverage at SCOTUSblog.

The ruling did not decide every question about when religious organizations may receive public funds, but it established a clear rule against blanket exclusions in certain funding programs and signaled greater scrutiny when a neutral benefit is withheld because of an organization’s religious character.

Kennedy v. Bremerton and public-school religious expression

Kennedy v. Bremerton addressed whether a public school employee’s on-the-job, postgame prayers were protected religious expression. The Court’s opinion emphasized the Free Exercise and Free Speech interests of the employee while also discussing how those interests intersect with Establishment concerns in public schools. The decision reshaped how courts analyze school-employee prayer and clarified that context and history matter when determining whether government action violates the Constitution Kennedy v. Bremerton opinion.

That case is significant because it illustrates how the Court applies the 14th Amendment’s protection of religious exercise to everyday contexts in public institutions, and it shows the balancing act courts perform when religious expression occurs in state-run schools.

Doctrinal shifts and Employment Division v. Smith as context

Employment Division v. Smith changed the legal standard for some Free Exercise claims by holding that neutral, generally applicable laws may be applied even if they incidentally burden religious practice, without triggering strict scrutiny. That outcome generated sustained debate and led to a patchwork of statutory responses and doctrinal refinements. For a recent summary of how these developments fit together and what scholars and policymakers continue to debate, see the Congressional Research Service overview on religious liberty Religious Liberty overview. Additional legislative materials related to these debates are available at Congress.gov.

More recent Supreme Court decisions, however, have continued to adjust specific lines of doctrine, leaving an evolving standard of review that depends on the context of the claim and the precise government action at issue. The arc from Smith through Trinity Lutheran and Kennedy shows that Free Exercise doctrine is not static.

How the Free Exercise and Establishment Clauses function in practice

Public-school expression and discipline

Practically, that means a school must be cautious about disciplining religious expression in ways that single out religion, while also avoiding actions that could be read as government endorsement of a particular faith. Case outcomes turn on facts such as timing, context, and the role of the school employee or student involved.

Readers interested in educational settings can also consult the site’s discussion of educational freedom for related issues at the state level.

Religious organizations and public funding

Disputes about whether religious groups may receive public grants or participate in neutral benefit programs often turn on whether a program is genuinely neutral and whether excluding a religious actor is a categorical rule. Trinity Lutheran is a key precedent because it found constitutional problems with excluding a religious entity from a general public benefit solely for being religious Trinity Lutheran opinion.

That decision does not automatically mean every grant program must fund churches in every circumstance. Courts look at program structure, the nature of the funds, and whether permitting a religious actor to participate would violate other constitutional interests or statutory provisions.

Employment, accommodations, and exemptions

Employment disputes can raise Free Exercise issues when employees assert that workplace rules or disciplinary actions burden their religious practice. Some claims also proceed under statutes that provide religious accommodations. Outcomes depend on whether courts treat the disputed rule as a neutral law of general applicability or as a targeted burden requiring closer review, and whether statutory protections apply.

A related doctrinal area is the ministerial exception, which may bar certain employment claims brought by religious employees against religious employers. That exception removes some disputes from ordinary First Amendment balancing, and its scope remains a live doctrinal question in courts and commentary.

Standards of review and doctrinal change in Free Exercise claims

Courts use different standards of review when they assess Free Exercise claims. At one end is strict scrutiny, which requires the government to show a compelling interest and that the law is narrowly tailored. At the other is neutral-law analysis, where a generally applicable rule is applied even if it incidentally burdens religion. The choice of test matters because strict scrutiny is a demanding standard for government to meet, while neutral-law analysis gives broader leeway to otherwise general laws. For an overview of how Congress and courts have addressed these standards in recent years, consult the Congressional Research Service summary Religious Liberty overview.

The shift after Employment Division v. Smith away from automatic strict scrutiny for incidental burdens led to legislative responses in some jurisdictions and ongoing debate about the proper standard for Free Exercise claims. Those debates focus on where to draw the line between neutral, generally applicable rules and laws or actions that are targeted at religious conduct.

State and federal Religious Freedom Restoration Acts add another layer to the analysis. Some state RFRAs and the federal statute require a form of heightened review for burdens on religious exercise in particular circumstances, which can change the practical stakes for litigants even though constitutional standards remain central to judicial review.

Readers should note that the interaction of statutory protections and constitutional doctrine can produce varying results across jurisdictions, making outcomes fact-specific and contingent on both law and procedural posture.

Public schools are a frequent setting for disputes about religion because they are government-run and reach children and employees in daily contexts. Courts assess whether a school’s action is government speech, the conduct of a teacher acting in an official capacity, or private student expression. Those distinctions affect whether the 14th Amendment’s religion protections apply and which clause-Free Exercise or Establishment-controls the analysis. When discussing school settings, Kennedy is often cited for how courts treat employee prayer and related disciplinary questions Kennedy v. Bremerton opinion.

Common scenarios where the 14th Amendment protects religious practice

School cases and student or teacher expression

Students and teachers commonly encounter situations where the 14th Amendment’s protections are invoked: school discipline for prayer or religious speech, organized religious clubs using public facilities, and teacher conduct that may be seen as government-endorsed religion. Courts evaluate these cases by asking whether the challenged government action is state action and whether it runs afoul of the Free Exercise or Establishment Clause. Kennedy is a frequent touchstone for teacher or coach prayer issues in recent opinions Kennedy v. Bremerton opinion.

Parents, students, and school officials can often predict how a court will view a dispute by looking at who initiated the action, the role of the person expressing religion, and whether the school’s conduct could reasonably be seen as endorsing a particular faith.

Funding and grant eligibility for religious groups

When religious nonprofits apply for public grants or participate in voucher or grant programs, courts look to whether a program is neutral and generally available. Trinity Lutheran is commonly cited for the proposition that states may not automatically exclude religious entities from otherwise neutral benefit programs purely because they are religious Trinity Lutheran opinion.

But because program details vary and constitutional interests can conflict, outcomes depend on the structure of the funding, any statutory limits, and the particular constitutional issues raised in litigation.

Workplace accommodations and religiously motivated conduct

Workplace claims often combine Free Exercise concerns with statutes that require employers to accommodate sincerely held religious beliefs. Courts examine whether an employer’s rule is neutral and generally applicable or whether it imposes a targeted burden on religious practice. If a rule is treated as neutral, the employer may prevail; if not, heightened review or accommodation duties can change the result.

The ministerial exception can alter the landscape for certain employees of religious institutions by limiting the application of employment law to employment decisions tied to religious mission or leadership roles. The scope of that exception continues to be discussed in legal commentary and lower-court litigation.

Deciding factors: how courts evaluate Free Exercise claims under the 14th Amendment

Courts typically consider whether the challenged action is government action; freedom of religion claims under the 14th Amendment require state or local involvement rather than purely private conduct. The government-action threshold is the starting point for whether a constitutional claim is available Incorporation doctrine overview.

If government action is present, courts then ask whether the law or policy is neutral and generally applicable, or whether it targets religion. A neutral, generally applicable law is often subject to a different, less searching inquiry than a law that singles out religion for special treatment. When a law targets religion, courts are more likely to apply strict scrutiny and require a compelling governmental interest to justify the burden.

Another frequent inquiry is whether the law imposes a substantial burden on sincere religious exercise. Courts assess sincerity and the magnitude of the burden in context. That determination affects whether the claimant is entitled to an accommodation or heightened judicial review. Debates remain about how courts should evaluate burdens that arise from broadly applicable regulations.

Typical mistakes and misunderstandings about freedom of religion

Assuming absolute protection

One common mistake is assuming that freedom of religion provides absolute protection for any religiously motivated conduct. Constitutional protections are powerful, but courts balance religious liberty against other government interests and apply doctrinal tests that can permit burdens in some circumstances. The existence of a legal interest does not automatically mean an exemption is required.

Confusing slogans with legal outcomes

Rhetorical claims or slogans about religious freedom are not substitutes for legal analysis. Outcomes in courts depend on facts, statutes, and precedent rather than on political messaging. Readers should consult primary opinions and neutral summaries to see how courts reasoned in comparable cases.

Overlooking state-federal interactions

State laws, including state Religious Freedom Restoration Acts, can change the practical stakes for litigants and lead to different outcomes in state court or under state law. That interaction between state statutes and constitutional doctrine adds complexity and means that identical facts can produce different legal paths in different jurisdictions. For a current survey of these interactions and recent developments, see the Congressional Research Service analysis Religious Liberty overview.

Conclusion: what the 14th Amendment’s protection of freedom of religion means today and what to watch next

In short, the 14th Amendment protects freedom of religion primarily by making the First Amendment’s Free Exercise and Establishment Clauses applicable to state and local governments through incorporation. That baseline rests on early decisions like Cantwell and Everson, which set the doctrinal groundwork for later refinements in cases such as Trinity Lutheran and Kennedy Cantwell v. Connecticut opinion. For more on related constitutional topics, see the site’s hub on constitutional rights.

Open questions in 2026 include how broadly courts will read the ministerial exception, how neutral public-benefit programs should treat religious actors, and how state RFRAs will continue to interact with constitutional standards. Readers who want to follow developments should consult the primary Supreme Court opinions and neutral summaries by reputable legal research services for authoritative language and reasoning.

Michael Carbonara is a candidate whose public materials note faith and service as part of his profile. This article does not analyze his positions, but provides background legal context that voters and civic readers may find useful when evaluating candidates’ statements about religious liberty. Learn more on the about page.