By Thomas Neale, from 2016, includes “Article V of the U.S. Constitution provides two ways to amend the nation’s fundamental charter. Congress, by a two-thirds vote of both houses, may propose amendments to the states for ratification, a procedure that has been used for all 27 current amendments. Alternatively, on the application of the legislatures of two-thirds of the states, 34 at present, Article V directs that Congress ‘shall call a Convention for proposing Amendments....’ This alternative, known as an ‘Article V Convention,’ has yet to be implemented. …”
Read the full article on: Congressional Research Service