ENGEL v. VITALE, 370 U.S. 421 (1962)

qIn Cantwell v. Connecticut, 310 U.S. 296 (1940), and Everson v. Board of Education, 330 U.S. 1 (1947), the Supreme Court held that the First Amendment religious clauses applied to the states

q Thus No State can establish a religion nor prohibit the free exercise of religion