“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, as Part of this Constitution, when ratified by the Legislatures of three fourths of the several States, or by Conventions in three fourths thereof, as the one or the other Mode of Ratification may be proposed by the Congress; Provided that no Amendment which may be made prior to the Year One thousand eight hundred and eight shall in any Manner affect the first and fourth Clauses in the Ninth Section of the first Article; and that no State, without its Consent, shall be deprived of its equal Suffrage in the Senate.”
Step 1: On the application of the Legislatures of two thirds of the several States – to call a Convention. The plain language of the text does not answer the following questions: Must the applications of the requisite number of States be identical or ask for substantially the same amendment or merely deal with the same subject matter? Must the requisite number of petitions be contemporaneous with each other, substantially contemporaneous, or strung out over several years?
Step 2: The Congress…shall call a convention. The plain language of the text does not specify when and how a convention is to be convened. There is no legal precedent that specifies how delegates are selected, how they are compensated…etc.) Consequently, there is no certainty as to who the delegates would be. Congress is given a free hand to determine the method of selecting delegates.
Step 3: for proposing Amendments. The plain language of the text does not indicate if a convention could be limited to consideration of the amendment or the subject matter which it is called to consider. No legal provision limits the constitutional convention in the amount of amendments it can consider or propose.