
Atheists are protected by the US Constitution, which prohibits the government from establishing a government-sponsored house of worship or showing preference to one or all religions by passing laws to favour religion, or by forcing citizens to profess belief in religion or attend religious services. The First Amendment prohibits the government from punishing citizens for professing and exercising their religious beliefs, including a lack of religious belief. The Establishment Clause protects atheists from being forced to participate in government-sponsored religion and from government reprisal if they do not participate. The Free Exercise Clause also means that the government may not express a preference for religion over irreligion.
| Characteristics | Values |
|---|---|
| Atheists are protected by the Establishment Clause | Prohibits the government from establishing a government-sponsored house of worship |
| Atheists are protected by the Establishment Clause | Prohibits the government from showing preference to one or all religions by passing laws to favor religion |
| Atheists are protected by the Establishment Clause | Prohibits the government from forcing citizens to profess belief in religion or attend religious services |
| The Free Exercise Clause | The government may not express a preference for "religion over irreligion" |
| The U.S. Constitution permits an affirmation in place of an oath | Allows atheists to give testimony in court or to hold public office |
| The U.S. Constitution prohibits states and the federal government from requiring any kind of religious test for public office |
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What You'll Learn
- Atheists are protected by the Establishment Clause
- The Free Exercise Clause
- The U.S. Constitution permits an affirmation in place of an oath
- The U.S. Constitution prohibits states and the federal government from requiring any kind of religious test for public office
- The First Amendment prohibits the government from punishing citizens for professing and exercising their religious beliefs

Atheists are protected by the Establishment Clause
The Supreme Court has held the Free Exercise Clause to mean that the government may not express a preference for "religion over irreligion". In 2005, Justice O'Connor, concurring with the majority's conclusions in *McCreary County v. ACLU*, was more explicit: "The Religion Clauses... protect adherents of all religions, as well as those who believe in no religion at all".
The U.S. Constitution also permits an affirmation in place of an oath to allow atheists to give testimony in court or to hold public office. The Supreme Court case *Torcaso v. Watkins* (1961) reaffirmed that the U.S. Constitution prohibits states and the federal government from requiring any kind of religious test for public office. This decision is generally understood to also apply to witness oaths.
Several American atheists have used court challenges to address discrimination against atheists. For example, Michael Newdow challenged the inclusion of the phrase "under God" in the United States Pledge of Allegiance on behalf of his daughter, claiming that the phrase amounted to government endorsement of discrimination against atheists.
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The Free Exercise Clause
Atheists are protected by the First Amendment of the US Constitution, which prohibits the government from punishing citizens for professing and exercising their religious beliefs, or lack thereof. The Establishment Clause prohibits the government from establishing a government-sponsored house of worship or showing preference to one or all religions by passing laws to favour religion, or by forcing citizens to profess belief in religion or attend religious services. This protects atheists from being forced to participate in government-sponsored religion and from government reprisal if they do not participate.
Several American atheists have used court challenges to address discrimination against atheists. For example, Michael Newdow challenged the inclusion of the phrase "under God" in the United States Pledge of Allegiance on behalf of his daughter, claiming that the phrase amounted to government endorsement of discrimination against atheists. Atheists are also protected by the Free Speech Clause of the First Amendment, which allows them to express their non-religious beliefs and opinions without fear of government censorship or reprisal.
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The U.S. Constitution permits an affirmation in place of an oath
Atheists are protected by the First Amendment, which prohibits the government from punishing citizens for professing and exercising their religious beliefs, including a lack of religious belief. The Establishment Clause prohibits the government from establishing a government-sponsored house of worship or showing preference to one or all religions by passing laws to favour religion, or by forcing citizens to profess belief in religion or attend religious services. This protects atheists from being forced to participate in government-sponsored religion and from government reprisal if they do not participate. The Supreme Court has held the Free Exercise Clause to mean that the government may not express a preference for "religion over irreligion".
In 2016, President Barack Obama signed H.R. 1150, an amendment to the Frank R. Wolf International Religious Freedom Act. It includes protections for "non-theistic beliefs, as well as the right not to profess or practice any religion at all".
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The U.S. Constitution prohibits states and the federal government from requiring any kind of religious test for public office
Atheism is protected under the First Amendment of the US Constitution. The First Amendment prohibits the government from punishing citizens for professing and exercising their religious beliefs, or lack of religious belief. The Establishment Clause prohibits the government from establishing a government-sponsored house of worship or showing preference to one or all religions by passing laws to favour religion, or by forcing citizens to profess belief in religion or attend religious services. This protects atheists from being forced to participate in government-sponsored religion and from government reprisal if atheists did not participate. The Free Exercise Clause also means that the government may not express a preference for "religion over irreligion".
The US Constitution also permits an affirmation in place of an oath to allow atheists to give testimony in court or to hold public office. The Supreme Court case Torcaso v. Watkins (1961) reaffirmed that the US Constitution prohibits states and the federal government from requiring any kind of religious test for public office. This decision is generally understood to also apply to witness oaths.
Despite these protections, several American atheists have used court challenges to address discrimination against atheists. For example, Michael Newdow challenged the inclusion of the phrase "under God" in the United States Pledge of Allegiance on behalf of his daughter, claiming that the phrase amounted to government endorsement of discrimination against atheists. Additionally, the constitutions of seven US states ban atheists from holding public office.
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The First Amendment prohibits the government from punishing citizens for professing and exercising their religious beliefs
Atheists are protected by the First Amendment, which prohibits the government from punishing citizens for professing and exercising their religious beliefs, including a lack of religious belief. The Establishment Clause protects atheists from being forced to participate in government-sponsored religion and from government reprisal if they do not participate. It also prohibits the government from establishing a government-sponsored house of worship or showing preference to one or all religions by passing laws to favour religion. The Free Exercise Clause also means that the government may not express a preference for 'religion over irreligion'.
In 2005, Justice O'Connor, concurring with the majority's conclusions in McCreary County v. ACLU, was explicit: 'The Religion Clauses... protect adherents of all religions, as well as those who believe in no religion at all'. This was reaffirmed in the 1961 Supreme Court case Torcaso v. Watkins, which stated that the US Constitution prohibits states and the federal government from requiring any kind of religious test for public office. The U.S. Constitution also permits an affirmation in place of an oath to allow atheists to give testimony in court or to hold public office.
However, the constitutions of seven US states ban atheists from holding public office.
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Frequently asked questions
Yes, the First Amendment prohibits the government from punishing citizens for professing and exercising their religious beliefs, including a lack of religious belief.
The First Amendment protects atheists through the Establishment Clause, which prohibits the government from establishing a government-sponsored house of worship or showing preference to one or all religions by passing laws to favour religion, or by forcing citizens to profess belief in religion or attend religious services.
The Establishment Clause protects atheists from being forced to participate in government-sponsored religion and from government reprisal if atheists do not participate.
The Free Exercise Clause means that the government may not express a preference for "religion over irreligion". In 2005, Justice O'Connor was explicit: "The Religion Clauses... protect adherents of all religions, as well as those who believe in no religion at all".
The US Constitution permits an affirmation in place of an oath to allow atheists to give testimony in court or to hold public office. However, the constitutions of seven US states ban atheists from holding public office.

























