Rational Basis Review is a standard of judicial review used by courts to evaluate laws or government actions that do not involve fundamental rights or suspect classifications. Under this standard, the government must show that the law is rationally related to a legitimate government interest. This means that as long as there is a reasonable justification for the law, it is likely to be upheld. This review is the most lenient form of scrutiny compared to other standards, such as Strict Scrutiny or Intermediate Scrutiny. Courts typically defer to the legislative judgment, allowing a wide range of government actions to be considered constitutional under this review.