If Congress ever decides to act, Article V gives Congress exclusive power to issue the "Call" for a convention to propose amendments. The Call is the governing document which determines all the basic rules such as where and when a convention will be held, who is eligible to be a delegate, and how delegates will be apportioned. That's the most important question. Will each state have one vote, which was the rule in the 1787 Philadelphia convention, or will the convention be apportioned according to population (like Congress or the Electoral College)? Nothing in Article V gives the states any power to make this fundamental decision.
Article V doesn't give any power to the states to propose constitutional amendments, or to decide which amendments will be considered by the convention.
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