Ok, the first Civil War was about the Union being preserved by quelling what Lincoln thought was a natural right to "to rise up and shake off the existing government ". To the Goon then, secession is by default implied legal, as the Constitution was/is (still) totally silent on the subject.
To the Goon then, secession is by default implied legal, as the Constitution was/is (still) totally silent on the subject.
Nothing in the Constitution forbids secession. But since you brought up the concept of implied powers, then clearly implied in the Constitution is the need to gain the permission of the other states to leave.
Thinking of the USS Brooklyn, it reminds me of the ship that Lincoln put us all on....
http://www.youtube.com/watch?v=kJTURFcBuB8