Judicial review significantly impacts legislation by allowing courts to assess the constitutionality of laws and executive actions. This process ensures that legislative and executive powers remain within their constitutional limits, safeguarding democratic principles. When courts find laws unconstitutional, they can nullify them, thereby preventing possible abuses of power. Judicial review serves as a check on both the legislature and the executive, promoting accountability and protecting individual rights. The impact is profound, as it shapes the legal framework within which laws operate and influences future legislative actions.