The United States does not have a national religion. The First Amendment forbids the federal government from establishing one, and the Supreme Court has extended that prohibition to every state, county, and city. The country was founded on a deliberate separation between government authority and religious institutions, a principle reinforced by the 1796 Treaty of Tripoli, which declared that “the government of the United States of America is not in any sense founded on the Christian Religion.”1The Avalon Project. The Barbary Treaties 1786-1816 – Treaty of Peace and Friendship, Signed at Tripoli November 4, 1796
What the Constitution Says
Two provisions do the work. The First Amendment opens with a pair of religion clauses in a single sentence: the Establishment Clause bars Congress from making any law “respecting an establishment of religion,” and the Free Exercise Clause prohibits the government from blocking your right to practice your faith.2Congress.gov. U.S. Constitution – First Amendment Together, they mean the government can neither promote a religion nor suppress one.
The Establishment Clause does more than prevent an official state church. It forbids the government from favoring one religion over another, favoring religion over non-religion, or compelling anyone to participate in religious activity.3Legal Information Institute. Establishment Clause
Those protections originally bound only the federal government. In 1947, the Supreme Court ruled in Everson v. Board of Education that the Fourteenth Amendment extends the Establishment Clause to state and local governments as well. Neither a state nor the federal government, the Court held, “can set up a church” or “pass laws which aid one religion, aid all religions, or prefer one religion over another.”4Justia. Everson v. Board of Education, 330 U.S. 1 (1947)
Article VI adds a separate rule about who can hold power. It states that “no religious Test shall ever be required as a Qualification to any Office or public Trust under the United States.”5Congress.gov. Article VI Clause 3 – Oaths of Office You don’t need to belong to any faith, or hold any religious belief at all, to serve in government. The Supreme Court reinforced that rule in Torcaso v. Watkins, striking down a Maryland requirement that a notary public declare belief in God before receiving a commission. The Court held that this religious test “unconstitutionally invades his freedom of belief and religion.”6Justia. Torcaso v. Watkins, 367 U.S. 488 (1961)
Several state constitutions still carry provisions requiring officeholders to profess belief in God. Those clauses are legally dead after Torcaso. They linger only because amending a state constitution takes a political process that many legislatures haven’t finished. No government in the country can actually enforce one today.
What the Government Cannot Do
Because there is no established religion, public institutions cannot direct religious exercises or single out a faith for official endorsement. Government-composed prayer in public schools is one clear example. In Engel v. Vitale, the Supreme Court ruled that school officials cannot write an official prayer and require students to recite it, even if individual students may opt out.7Justia. Engel v. Vitale, 370 U.S. 421 (1962)
When a government body crosses these lines, affected individuals can bring federal lawsuits seeking court orders to stop the violation. Courts can award attorney fees to plaintiffs who prevail, which makes enforcement practical for people who couldn’t otherwise afford to litigate against a government entity.8Office of the Law Revision Counsel. 42 U.S. Code 1988 – Proceedings in Vindication of Civil Rights
How courts analyze these cases has shifted. In Kennedy v. Bremerton School District, decided in 2022, the Court held that Establishment Clause questions should be resolved by reference to “historical practices and understandings” rather than the abstract tests used for decades before.9Justia. Kennedy v. Bremerton School District, 597 U.S. (2022) The framework changed; the core prohibitions on government-directed religion did not.
What the Government Can Do
The absence of a national religion doesn’t mean the government must scrub every reference to faith from public life. A few areas often confuse readers, so it helps to see where the constitutional line actually falls.
Ceremonial References
Phrases like “In God We Trust” on currency and “under God” in the Pledge of Allegiance coexist with the constitutional ban on establishing a religion. Courts have upheld these references under the concept of ceremonial deism, reasoning that through long use they carry a patriotic rather than devotional meaning. Legislative prayers date back to the First Congress itself. None of these references creates a legal obligation. Nobody is required to recite the Pledge, affirm any belief, or treat “In God We Trust” as a personal statement of faith.
Public Funding That Reaches Religious Groups
Religious organizations can receive federal grants for social services, education, and community programs. They cannot use that money for worship, religious instruction, or proselytizing, and the religious activities must be kept separate from the government-funded program in both time and location. Beneficiaries must be told their religious liberties will be respected, and if someone objects to a program’s religious character, the organization must help them find an alternative provider when one is reasonably available.10U.S. Department of Education. Guidance for Faith-Based and Other Neighborhood Organizations Grantees
The law cuts the other direction too. In Carson v. Makin, the Supreme Court ruled that when a state creates a program funding private school tuition, it cannot exclude schools solely because they are religious.11Justia. Carson v. Makin, 596 U.S. (2022) Public money flowing to a religious organization through the independent choices of private individuals, such as parents selecting a school, does not violate the Establishment Clause.
Tax Exemption
Religious organizations qualify for federal tax exemption under Internal Revenue Code Section 501(c)(3), the same provision that covers secular charities and educational nonprofits.12Internal Revenue Service. Tax Information for Churches and Religious Organizations The status applies across all faiths equally. The government does not evaluate theology or rank denominations. In exchange, 501(c)(3) organizations, churches included, are barred from participating in campaigns for or against candidates for public office.13Internal Revenue Service. Charities, Churches and Politics
How Your Religious Freedom Is Protected
The flip side of no national religion is broad protection for personal religious practice. Two protections stand out.
The Religious Freedom Restoration Act, passed by Congress in 1993, sets a high bar the federal government must clear before restricting religious conduct. Under RFRA, the government cannot impose a substantial burden on a person’s religious exercise unless it shows the burden advances a compelling government interest and uses the least restrictive means of doing so.14Office of the Law Revision Counsel. 42 U.S. Code 2000bb-1 – Free Exercise of Religion Protected About half the states have passed their own versions covering state and local action.
Workplace protections come from Title VII of the Civil Rights Act of 1964, which bars employers with 15 or more workers from discriminating based on religion and requires them to accommodate religious practices where feasible. In Groff v. DeJoy, the Supreme Court held in 2023 that an employer cannot refuse an accommodation by pointing to a trivial inconvenience; denial requires showing that granting it would result in substantial increased costs relative to the overall operation of the business.15Justia. Groff v. DeJoy, 600 U.S. (2023) The employer must also consider whether alternative accommodations might work.16U.S. Equal Employment Opportunity Commission. Fact Sheet: Religious Accommodations in the Workplace
Religious organizations themselves get room the ordinary employer does not. Federal law exempts them from Title VII’s ban on religious discrimination, letting a church, religious school, or faith-based charity prefer members of its own faith for any position.17Office of the Law Revision Counsel. 42 USC 2000e-1 – Exemption The ministerial exception, a First Amendment doctrine the Supreme Court recognized in Hosanna-Tabor v. EEOC, goes further: it bars the government from interfering with a religious organization’s choice of its ministers and key religious leaders at all.18Justia. Hosanna-Tabor Evangelical Lutheran Church and School v. EEOC, 565 U.S. 171 (2012)
The constitutional line has stayed in the same place since the founding. The government can acknowledge religion’s role in American heritage, but it cannot compel belief, fund theology, or tie civic participation to any creed.