You might be thinking of Article 4, 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."
[... There's no clause in the Constitution that allows for forced revocation of membership.
You might be thinking of Article 4, 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."...]
True there is no clause for forced revocation of membership, but you can always draft a new constitutional amemdment. And it can say just about anything you want so long as you don't violate the Bill of Rights.
So I'm saying draft an Amemdment to expell Komifornia, get it through congress, get it passed by the rest of the states ... then make a declaration of war against the new "country" of California, invade it, expell all the commies and "illegals" and then regrant statehood to it "Open under new Management".