[codys]

Yes, I'm curious about the way they're intending to handling this legally as well. A bit of searching shows a Supreme Court case Virginia v. Tennessee, 148 U.S. 503 (1893) [1]. This restricts the application of that clause somewhat, but it isn't 100% clear to me that this Pact is a perfect match for the facts in that case.

It also sounds like [2] things are rather flexible in what approval is and when it is obtained. It's plausible that they expect to ask for approval, or rely on it being unlikely that congress explicitly disapproves, or perhaps they expect to obtain approval in the future.

[note: I've linked to a point in the opinion discussing Congressional approval]

1: https://scholar.google.com/scholar_case?case=103881997639573...

2: https://www.gsgp.org/media/1313/understanding_interstate_com...