Also known as: minimal scrutiny · rational basis review · rational basis scrutiny
Written by attorneys · grounded in primary & secondary sources — see below
The most deferential standard of judicial review applied to equal protection challenges. A classification survives if it is rationally related to any legitimate governmental interest. The challenger bears the burden of showing the classification is arbitrary or irrational.
Mason McCarthy, a physically fit 51-year-old officer, sues after the city enforces a mandatory retirement rule at age 50. The court applies minimum scrutiny and sustains the rule because the age line is rationally related to the legitimate goal of ensuring a capable police force. The fact that some older officers remain fit does not invalidate the classification.
Miranda Morales, a national from a majority-Muslim country, is denied a visa under an executive order citing national security. She sues claiming religious animus. The court applies minimum scrutiny in the immigration context and upholds the order because it states a national security purpose rationally related to the entry limits.
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Maurice Marshall, born out of wedlock, challenges a state intestacy statute that treats illegitimate children differently for inheritance. The court notes that illegitimacy classifications receive more than minimum scrutiny and therefore applies a heightened test rather than the deferential rational basis standard.
Mustafa Mahmoud, a member of a religious group that uses a controlled substance in ceremonies, is denied unemployment benefits after being fired for the practice. The court applies minimum scrutiny to the neutral and generally applicable law and upholds the denial because the rule is rationally related to the state's interest in uniform drug enforcement.
Midwest Airlines challenges a federal statute regulating gun possession near schools as exceeding Congress's commerce power. The court declines to apply minimum scrutiny and instead uses a more rigorous test, invalidating the law because the activity does not substantially affect interstate commerce.
Madison Meyers challenges a state military institute's male-only admissions policy. The court declines to apply minimum scrutiny because gender classifications demand intermediate scrutiny and an exceedingly persuasive justification rather than mere rational basis review.
Minimum scrutiny applies to classifications that do not involve suspect classes such as race or national origin and do not burden fundamental rights. Economic and social welfare regulations receive this deferential review. The challenger must prove the classification is arbitrary or irrational.
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It is very difficult. A law survives if any conceivable legitimate governmental interest supports it, even if the classification is underinclusive or overinclusive. Courts defer heavily to legislative judgments under this standard.
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Yes, though rarely. A classification fails if it rests on mere prejudice or lacks any rational connection to a legitimate purpose. For example, denying public education to undocumented children solely to save costs has been held to fail even rational basis review.
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…context, “‘[s]uch a test has no basis in precedent and relegates a serious First Amendment value to the barest level of minimum scrutiny that the Equal Protection Clause already provides.’” Hobbie v. Unemployment Appeals Comm’n of Florida , 480 U. S. 136, 141-142 (1987) (quoting Bowen v. Roy , 476 U. S. 693, 727 (1986)…