U.S. courts apply the strict scrutiny standard in two contexts:
To satisfy the strict scrutiny standard, the law or policy must:
Legal scholars, including judges and professors, often say that strict scrutiny is "strict in theory, fatal in fact" since popular perception is that most laws subjected to the standard are struck down. However, an empirical study of strict scrutiny decisions in the federal courts found that laws survive strict scrutiny more than 30% of the time. In one area of law, religious liberty, laws that burden religious liberty survived strict scrutiny review in nearly 60% of cases. However, a discrepancy was found in the type of religious liberty claim, with most claims for exemption from law failing and no allegedly discriminatory laws surviving.3 See also the cases cited below, however; several appear to permit the exemption from laws based upon religious liberty.
Harvard law professor Richard Fallon Jr. has written that rather than being neatly applied, under strict scrutiny, "interpretation is more varied than is often recognized",4 a view that has been acknowledged by U.S. Supreme Court Justice, Clarence Thomas (e.g. in his dissent (part III) in Hellerstedt).5
The compelling state interest test is distinguishable from the rational basis test, which involves claims that do not involve a suspect class or fundamental right, but still arise under the Equal Protection Clause or Due Process Clause.
Presumption of constitutionality doesn't apply under strict scrutiny; the burden to prove the constitutionality of a law shifts to the government lawyers.
Main article: Suspect classification
The Supreme Court has established standards for determining whether a statute or policy must satisfy strict scrutiny. One ruling suggested that the affected class of people must have experienced a history of discrimination, must be definable as a group based on "obvious, immutable, or distinguishing characteristics", or be a minority or "politically powerless".6
The Court has consistently found that classifications based on race, national origin, and alienage require strict scrutiny review. The Supreme Court held that all race-based classifications must be subjected to strict scrutiny in Adarand Constructors v. Peña, 515 U.S. 200 (1995), overruling Metro Broadcasting, Inc. v. FCC (89-453), 497 U.S. 547 (1990), which had briefly allowed the use of intermediate scrutiny to analyze the Equal Protection implications of race-based classifications in the narrow category of affirmative-action programs established by the federal government in the broadcasting field.
As applied in Korematsu v. United States, which upheld the race-based exclusion order and internment during World War II of Japanese Americans who had resided on the West Coast of the United States, strict scrutiny was limited to instances of de jure discrimination, where a racial classification is written into the language of a statute.
The Supreme Court's decision in Village of Arlington Heights v. Metropolitan Housing Development Corp. provided further definition to the concept of intent and clarified three particular areas in which intent of a particular administrative or legislative decision becomes apparent, the presence of any of which demands the harsher equal protection test. The Court must use strict scrutiny if one of these tests, among others, is met:
Currie, Peter M (2006–2007). "Restricting Access to Unapproved Drugs: A Compelling Government Interest". J.L. & Health. 20 (2): 309. Retrieved July 29, 2023. https://engagedscholarship.csuohio.edu/jlh/vol20/iss2/7/ ↩
Blackmun, H. "Roe v. Wade, 410 U.S. 113 (1973)". Justia Law. Retrieved February 12, 2023. https://supreme.justia.com/cases/federal/us/410/113/ ↩
Winkler, Adam (April 18, 2006). "Fatal in Theory and Strict in Fact: An Empirical Analysis of Strict Scrutiny in the Federal Courts". SSRN 897360 – via papers.ssrn.com. https://papers.ssrn.com/abstract=897360 ↩
Fallon, Jr., Richard (2007). "Strict Judicial Scrutiny" (PDF). UCLA Law Review. 54: 1267. https://www.uclalawreview.org/wp-content/uploads/2019/09/33_54UCLALRev1267June2007.pdf ↩
Whole Woman's Health et al. v. Hellerstedt, Commissioner, Texas Department of State Health Services, et al., pp. 11-14 of Thomas's dissent (US Supreme Court 2016-07-27), Text, archived from the original. /wiki/Whole_Woman%27s_Health_v._Hellerstedt ↩
"Lyng v. Castillo, 477 U.S. 635 (1986)". Justia - US Supreme Court. June 27, 1986. Retrieved May 9, 2022. As a historical matter, [close relatives] have not been subjected to discrimination; they do not exhibit obvious, immutable, or distinguishing characteristics that define them as a discrete group; and they are not a minority, or politically powerless. https://supreme.justia.com/cases/federal/us/477/635/ ↩