Article V describes the process necessary to reform the constitution. It establishes two methods of proposing amendments: by Congress or by a national convention requested by the states. With the first method, the Congress can propose an amendment with the votes of two thirds (of a quorum, not necessarily of the whole chamber) of the Senate and the House of Representatives. With the second method, the legislative bodies of two thirds of the states can summon and force Congress to convene a national convention, and Congress must convene that convention in order to consider the proposed amendments.
