> One of the mechanisms for amending the USA constitution is via a 3/4 vote of both houses of Congress.
I believe this is factually incorrect. I'll offer Article V of the Constitution as my citation. Do you have a contrary citation to support this claim?
Source: Article V
Edit: Corrected 3/4 -> 2/3
Edit2: I stand corrected. The Bayh-Celler proposal was passed by the House and filibustered in the Senate in 1970.
https://en.wikipedia.org/wiki/Electoral_College_abolition_am...