In Burstyn v. Wilson (1952), the Supreme Court said a New York law allowing
a film to be banned on the basis of its being sacrilegious violated the
First Amendment.

Commonwealth v. Kneeland (Mass. 1838) was the last case in the United
States in which a court sustained a conviction for blasphemy. Blasphemy is
protected by the First Amendment.

People v. Ruggles (1811) is one of the few convictions for blasphemy in the
U.S. despite a state constitution provision, similar to the First
Amendment, disestablishing religion.

In early America, blasphemy was not protected by the First Amendment. State
v. Chandler (Del. 1837) reasoned that blasphemy laws punished disturbances
of the peace, not beliefs.

In 1824, the Pennsylvania Supreme Court upheld a blasphemy conviction
against a man who said the Bible was full of fables and lies. In Updegraph
v. Commonwealth, the court reasoned that Christianity was part of common
law, and the law only punished those who disturbed the peace or provoked
others to the same.