Choosing the Level of Scrutiny in Rights Cases

When the government passes a law or takes an action that someone claims violates a constitutional right, a court does not treat every challenge the same way. Instead, courts use a framework called tiers of scrutiny — three levels of review that differ in how hard the government must work to justify what it did. The lowest level is rational basis review. Courts apply this when no fundamental right or suspect classification is involved — for example, a law regulating business licenses or setting speed limits. The government only needs to show that the law is rationally related to a legitimate government interest. Courts almost always uphold laws under this standard; the government gets the benefit of the doubt. The middle level is intermediate scrutiny. Courts apply this most clearly to laws that classify people based on sex. The government must show the law is substantially related to an important government interest. The burden is heavier, and laws sometimes fail here. Note: classifications based on nonmarital birth have received heightened review in some cases, similar to intermediate scrutiny, but the Supreme Court has never formally settled that doctrine the way it has for sex — treat it as unsettled. The highest level is strict scrutiny. Courts apply this when a law burdens a fundamental right (such as voting or interstate travel) or uses a suspect classification (such as race, national origin, or alienage — that is, non-citizen status). The government must show the law is narrowly tailored to serve a compelling government interest. Laws almost always fail strict scrutiny — courts call this 'strict in theory, fatal in fact.' Note that religious discrimination is analyzed separately under the First Amendment's Free Exercise and Establishment Clauses, not as an equal-protection suspect classification. A helpful way to remember the framework: ask two questions. First, what is being burdened — a fundamental right or a sensitive classification? Second, how sensitive is it? Your answers to those questions point you to the right tier. Once you know the tier, you know who bears the burden and how hard it is to meet.