[Henchster]

Article IV Section 3. New states may be admitted by the Congress into this union; but no new states shall be formed or erected within the jurisdiction of any other state; nor any state be formed by the junction of two or more states, or parts of states, without the consent of the legislatures of the states concerned as well as of the Congress.

What makes them so sure that Sacramento will be willing to diminish its power by 2/3's?

And while not stated above, I believe they need a supermajority in both houses of Congress for this to pass. If not initially, then after Trump vetoes it.

[MeganC]

California’s state constitution delegates the ‘consent of the legislature’ clause of the US Constitution to the people of the state if they pass a state constitutional amendment via a referendum.