Read the First Amendment Center’s article on the free exercise clause, which includes a discussion of how Employment Division v. Smith, the 1990 peyote case, changed the legal precedent for religious groups whose practices conflict with state law.

Read the First Amendment Center’s resource page on Gonzales v. O Centro Espirita Beneficiente Uniao Do Vegetal. It includes amicus briefs filed for both sides of the case.

The UDV religion in the United States has a website with resources for covering the case, including a FAQ and background links.

The Lady Liberty League is a nonprofit group that advocates for religious freedom and freedom from religious discrimination for pagans. Its founder and co-executive director is Selena Fox, and it is located in Barneveld, Wisconsin.

The Public Affairs and Religious Liberty Department of the Seventh-day Adventist Church supports religious liberty internationally and employs legal experts. It is based in Silver Spring, Maryland.

The National Council of the Churches of Christ in the USA is an umbrella organization of Protestant, Anglican, Orthodox, historic African American and Living Peace denominations. The NCCC frequently files amicus briefs in religious and civil liberties cases. Philip E. Jenks is press contact.

The American Civil Liberties Union litigates on behalf of civil liberties, including religious liberties. It is based in Washington, D.C., and has many chapters throughout the United States. Anthony D. Romero is its executive director.

The Thomas More Law Center is a law firm dedicated to the defense and promotion of the religious freedom of Christians. Contact president and chief counsel Richard Thompson in Ann Arbor, Mich.

The Southeastern Legal Foundation is a legal advocacy group based in Marietta, Ga., and Washington, D.C. Its lawyers have argued in support of prayer in public places and for the public display of the Ten Commandments. Contact Todd Young.