Can the constitution be changed by adding an admendment?

Yes, the U.S. Constitution can be changed by adding an amendment. This process requires either a two-thirds majority vote in both the House of Representatives and the Senate or a constitutional convention called by two-thirds of state legislatures. Once proposed, the amendment must then be ratified by three-fourths of the state legislatures or by conventions in three-fourths of the states. This ensures that amendments reflect a broad consensus across the nation.