What Is Equal Protection?
The constitutional guarantee that the government must treat similarly situated people alike. Under the Fourteenth Amendment, states cannot discriminate against people without sufficient justification.
Quick Answer
The constitutional guarantee that the government must treat similarly situated people alike. Under the Fourteenth Amendment, states cannot discriminate against people without sufficient justification.
Full Explanation
The Equal Protection Clause of the Fourteenth Amendment says no state shall 'deny to any person within its jurisdiction the equal protection of the laws.' The Fifth Amendment's due process clause has been interpreted to impose a similar requirement on the federal government.
Equal protection does not mean the government must treat everyone identically — laws always classify people in some way. What it means is that the government's classifications must be justified at an appropriate level based on what is being classified.
The framework works through tiers of scrutiny. Rational basis review applies to most laws: the classification merely needs to be rationally related to a legitimate government interest. This is highly deferential — most laws survive. Intermediate scrutiny applies to sex-based classifications and some others: the classification must be substantially related to an important government interest. Strict scrutiny — the highest tier — applies to race, national origin, and fundamental rights: the classification must be necessary to achieve a compelling government interest, and it must be narrowly tailored. Very few laws survive strict scrutiny.
Equal protection challenges have produced some of the most significant Supreme Court decisions in American history: Brown v. Board of Education (race), Craig v. Boren (sex), Obergefell v. Hodges (sexual orientation), and many others.
Real-World Example
In Brown v. Board of Education (1954), the Supreme Court held that segregated public schools violated equal protection. Even if the facilities were physically equal, separating children by race stamped Black students with a badge of inferiority that impaired their ability to learn. The racial classification could not survive strict scrutiny.
In United States v. Virginia (1996), the Court held that Virginia's exclusion of women from the Virginia Military Institute violated equal protection. The state's justification — that the adversative military training method was unsuitable for women — failed the intermediate scrutiny applied to sex-based classifications.
Why It Matters for Law Students
Equal protection is a core subject in constitutional law and one of the most litigated areas of law. The tier of scrutiny applied to a classification often determines the outcome of a case. Understanding which groups receive which level of protection, and why, is essential for analyzing any equal protection problem.