Article 1 Section 10 of the Constitution should be in play, here....
Yup, Article 1 Section 10’s Compact clause clearly applies. Even before considering this as an extra-constitutional bypass of the amendment process this is clearly null and void absent congressional approval even if all 50 states individually passed such.
Ditto .
That's exactly what I said waaaay back when this 'Compact Among States' was first floated after Dubya won.
sorry for the very tardy reply, I just saw the thread.