been adopted. And two of them—Prohibition and its repeal—cancel each other out, so that overall only 15 amendments have been added since 1791, despite vast changes in American society and its economy. Four methods of amendment are provided for in Article V: 1. Passage in House and Senate by two-thirds vote; then ratification by majority vote of the legislatures of three-fourths (now 38) of the states. 2. Passage in House and Senate by two-thirds vote; then ratification by conventions called for that purpose in three-fourths of the states. 3. Passage in a national convention called by Congress in response to petitions by two-thirds (now 34) of the states; ratification by majority vote of the legislatures of three-fourths of the states. 4. Passage in a national convention, as in method 3; then ratification by conventions called for that purpose in three-fourths of the states. (Figure 2.2 illustrates each of these methods.) Because no amendment has ever been proposed by national convention, however, routes 3 and 4 have never been Figure 2.2 ROUTES OF AMENDMENT THE NATIONAL LEVEL: PROPOSAL OF AMENDMENTS THE STATE LEVEL: RATIFICATION OF AMENDMENTS Route 1 C A Passage in House and Senate, each by two-thirds vote* B Passage in a national convention called by Congress in response to petitions by two-thirds (34) of the states** Route 2 Route 3 Route 4 Acceptance by majority vote in the legislatures of three-fourths (38) of the states D Acceptance by conventions called for that purpose in three-fourths (38) of the states * In each amendment proposal, Congress has the power to choose the method of ratification, the time limit for consideration by the states, and other conditions of ratification. ** This method of proposal has never been employed. Thus amendment routes 3 and 4 have never been attempted. Changing the Institutional Framework: Constitutional Amendment 63