Uh, no one has to agree to it. That's the point. You don't get permission for it. Our founders demonstrated that.
And the reason the GOPers lost the presidency this time around is because the criminals outvoted the noncriminals.
No wonder Texas wants to secede. I believe it was Virginia (one of the states) that was promised it could secede if it didn't like union. It was a given that states could secede.
Lincoln was a genocidal maniac/murderer/criminal who didn't allow the states to do what the founders themselves once did: secede when government violated the rights of citizens and abdicated their rightful powers. This is why ObamaNazi loves Lincoln. Obama wants to mass murder thousands if not millions of loyal Americans.