Constitutional amendments are proposed through a specific process defined in the Constitution, often requiring a two-thirds majority in both houses of Congress or a national convention called by two-thirds of state legislatures. Once proposed, amendments must then be ratified by three-fourths of the state legislatures or state conventions. This rigorous process ensures that only widely supported changes to the Constitution are adopted, thereby reflecting the will of the people and maintaining the document's integrity over time. Such amendments play a critical role in adapting the Constitution to societal changes.