after 8th grade Employment Division v. Smith, 494 U.S. 872 (1990), allowing states to deny unemployment benefits to those using illegal drugs for religious purposes City of Boerne v. Flores, 521 U.S. 507 (1997), holding that some zoning laws may be an undue restriction of religious freedom Gonzales v. O Centro Espírita Beneficente União do Vegetal, 546 U.S. 418 (2006), allowing religious use of illegal drugs See also Constitutional law Equal protection Fundamental right Intermediate scrutiny Principle of proportionality#European Union law Rational basis review Suspect classification Undue burden standard References United States constitutional law Legal history of the United States Civil rights and liberties