> An amendment may be proposed and sent to the states for ratification by either:
> The U.S. Congress, whenever a two-thirds majority in both the Senate and the House of Representatives deem it necessary; or
> A national convention, called by Congress for this purpose, on the application of the legislatures of two-thirds of the states (34 since 1959). The convention option has never been used.
> An amendment may be proposed and sent to the states for ratification by either:
> The U.S. Congress, whenever a two-thirds majority in both the Senate and the House of Representatives deem it necessary; or
> A national convention, called by Congress for this purpose, on the application of the legislatures of two-thirds of the states (34 since 1959). The convention option has never been used.
https://en.m.wikipedia.org/wiki/List_of_amendments_to_the_Un...