Fundamental rights are a group of rights that have been recognized by a high degree of protection from encroachment. These rights are specifically identified in a constitution, or have been found under due process of law. The United Nations' Sustainable Development Goal 17, established in 2015, underscores the link between promoting human rights and sustaining peace.
In U.S. constitutional law, rational basis review is the normal standard of review that courts apply when considering constitutional questions, including due process or equal protection questions under the Fifth Amendment or Fourteenth Amendment. Courts applying rational basis review seek to determine whether a law is "rationally related" to a "legitimate" government interest, whether real or hypothetical. The higher levels of scrutiny are intermediate scrutiny and strict scrutiny. Heightened scrutiny is applied where a suspect or quasi-suspect classification is involved, or a fundamental right is implicated. In U.S. Supreme Court jurisprudence, the nature of the interest at issue determines the level of scrutiny applied by appellate courts. When courts engage in rational basis review, only the most egregious enactments, those not rationally related to a legitimate government interest, are overturned.
Rational basis review tests whether the government's actions are "rationally related" to a "legitimate" government interest. The Supreme Court has never set forth standards for determining what constitutes a legitimate government interest. Under rational basis review, it is "entirely irrelevant" what end the government is actually seeking and statutes can be based on "rational speculation unsupported by evidence or empirical data". Rather, if the court can merely hypothesize a "legitimate" interest served by the challenged action, it will withstand rational basis review. Judges following the Supreme Court's instructions understand themselves to be "obligated to seek out other conceivable reasons for validating" challenged laws if the government is unable to justify its own policies.
In the United States, the right to keep and bear arms is a fundamental right protected by the Second Amendment to the United States Constitution, part of the Bill of Rights, and by the constitutions of most U.S. states. The Second Amendment declares:
Stemming from English common law tradition, the concept of a right to keep and bear arms was recognized prior to the creation of a written national constitution.
Hate speech in the United States cannot be directly regulated by the government due to the fundamental right to freedom of speech protected by the Constitution. While "hate speech" is not a legal term in the United States, the U.S. Supreme Court has repeatedly ruled that most of what would qualify as hate speech in other western countries is legally protected speech under the First Amendment. In a Supreme Court case on the issue, Matal v. Tam (2017), the justices unanimously reaffirmed that there is no "hate speech" exception to the free speech rights protected by the First Amendment and that the U.S. government may not discriminate against speech on the basis of the speaker's viewpoint.
In academic circles, there has been debate over freedom of speech, hate speech, and hate speech legislation. Other forms of speech have lesser protection under court interpretations of the First Amendment, including commercial speech, "fighting words", and obscenity.
In constitutional law, the presumption of constitutionality is the legal principle that the judiciary should presume statutes enacted by the legislature to be constitutional, unless the law is clearly unconstitutional or a fundamental right is implicated.