Article. 5 – Amendment The Congress, whenever 2/3 of both Houses shall deem it necessary, shall propose Amendments to this Constitution, or on the application of the Legislatures of 2/3 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 3/4 of the several States, or by conventions in 3/4 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 1808 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.