Reply #186: It takes 3/4, not 2/3.

[GreenStormCloud]

Second nothing is stopping anyone from trying.
1) Have your Congressman propose an amendment to the Constitution
2) Get 2/3rds vote in both houses
3) Get 2/3rds of the States to ratify it.

Please be advised that it requires 3/4 of the states to ratify an amendment.

US Constitution, Article V:
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;...