That's what I thought!
There isn't any language in the Constitution that prohibits secession to the states so you and your ilk have no choice but to resort to the fallacious idea of "implied". Well I can't read implied, or shadows. Further, I seriously doubt that the folks who actually wrote the Constitution would have resorted to implying anything as they were very clearly capable of using the English language to express their exact meaning!
Fallacious only to those without an understanding of the Constitution.