Under Article V of the Constitution, there are two ways to propose and ratify amendments to the Constitution. To propose amendments, two-thirds of both houses of Congress can vote to propose an amendment, or two-thirds of the state legislatures can ask Congress to call a national convention to propose amendments.
1) The Constitution provides that an amendment may be proposed either by the Congress with a two-thirds majority vote in both the House of Representatives and the Senate or by a constitutional convention called for by two-thirds of the State legislatures. 2) Basic legislation by Congress, actions taken by the President, key decisions of the Supreme Court, the activities of political parties, and custom.
