The First Amendment's first words are about religion: "Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof." Two clauses, two different protections, both applied to the states through incorporation.
| Establishment Clause | Free Exercise Clause | |
|---|---|---|
| Protects against | government sponsoring or favoring religion | government interfering with religious practice |
| Classic case | Engel v. Vitale (1962): a prayer written by New York officials for public schools was struck down, 6 to 1, even though it was voluntary | Wisconsin v. Yoder (1972): Amish families did not have to keep their children in school after eighth grade |
| Later cases | Lemon v. Kurtzman (1971) set a three-part test, which the Court said in 2022 it no longer applies | Employment Division v. Smith (1990): neutral, generally applicable laws need no religious exemption; Congress answered with RFRA (1993) |
Why it works
Why two clauses? The founders knew both kinds of danger. Several colonies had official churches supported by taxes, and some states kept them after 1791 (the First Amendment then bound only Congress). Jefferson, in an 1802 letter to the Danbury Baptists, wrote of "a wall of separation between Church and State"; others read the clause more narrowly, as a ban on an official national church and on favoring one faith. Justices still debate where the lines fall: whether a public display, a coach's prayer or aid to religious schools crosses into establishment, and when a general law must make room for faith. The two clauses can pull in different directions, and one case can involve both.
Key idea
The Establishment Clause limits government sponsorship of religion (Engel v. Vitale, 1962). The Free Exercise Clause protects people's practice of religion (Wisconsin v. Yoder, 1972).
Worked example: Which clause?
A public school board writes a prayer and has teachers lead it each morning. Students may stay silent. Which clause is at issue, and what did the Court hold in a similar case?
- Officials wrote and led the prayer: that is government sponsorship.
- Engel v. Vitale (1962) struck down a state-written prayer even though it was voluntary.
Answer: The Establishment Clause; under Engel, the practice is unconstitutional.
Worked example: Which clause?
A state law requires schooling to age 16, and a religious community's faith teaches that children should leave formal school after eighth grade. Which clause?
- The law burdens how the families practice their faith.
- That is a free exercise claim, as in Wisconsin v. Yoder (1972), where the families won.
Answer: The Free Exercise Clause.
Common mistake
Mixing up the two clauses. Ask: is the government promoting religion (Establishment) or burdening someone's religious practice (Free Exercise)? A student praying on her own at school is exercising religion; a teacher-led official prayer raises establishment questions.