Question

Which is the last step in amending the US Constitution?

Answer 1

The Congress, whenever two thirds of both houses shall deem it necessary, shall propose amendments to this Constitution, or, on the application of the legislatures of two thirds of the several states, shall call a convention for proposing amendments, which in either case, shall be valid to all intents and purposes.

Answer 2

two thirds of both houses shall deem it necessary, shall propose amendments to this Constitution

Hope this helps a little