Constitutional amendments come into being through a defined process outlined in Article V of the U.S. Constitution. They can be proposed either by a two-thirds majority in both the House of Representatives and the Senate or by a constitutional convention called by two-thirds of state legislatures. After proposal, an amendment must be ratified by three-fourths of the state legislatures or through conventions in three-fourths of the states. This rigorous process ensures that only amendments with widespread support can alter the Constitution, reflecting the nation’s democratic principles and the need for consensus.