Strict Scrutiny

Strict scrutiny is the most demanding level of judicial review applied by courts evaluating the constitutionality of government action. When a law classifies people based on a suspect classification (race, national origin, religion, alienage) or burdens a fundamental right (speech, religion, privacy, voting, interstate travel), the government bears the burden of proving the law is constitutional.

Under strict scrutiny, the government must demonstrate two things: first, that the law serves a compelling governmental interest — not merely a legitimate or important one, but one of the highest order. Second, that the law is narrowly tailored to achieve that interest, meaning it uses the least restrictive means available and does not sweep more broadly than necessary.

The standard is sometimes described as "strict in theory, fatal in fact" because very few laws survive it. Notable exceptions include the internment case Korematsu v. United States (since repudiated) and certain affirmative action programs like those upheld in Grutter v. Bollinger. The Court's willingness to apply strict scrutiny strictly reflects the constitutional commitment to protecting minority rights and fundamental liberties from majoritarian overreach.

Strict scrutiny contrasts with intermediate scrutiny (used for gender and illegitimacy classifications) and rational basis review (used for economic and social legislation). Understanding which standard applies is often dispositive — the level of scrutiny frequently determines the outcome.

The doctrine is central to equal protection analysis under the Fourteenth Amendment and to substantive due process claims involving fundamental rights. It also plays a key role in First Amendment cases involving content-based speech restrictions.