[MamaTexan]

It is difficult to convey the idea of indissoluble unity more clearly than by these words. What can be indissoluble if a perpetual Union, made more perfect, is not? “

No, it is not. Particularly since secession by a State or a group of States doesn't 'dissolve' the Union, as the Union still exists....it merely changes the membership.

And as Tucker clearly stated, it's an ability the States possessed both before as well as after the writing of the Constitution.

[Para-Ord.45]

You may hold that opinion and feeling but you`re legally and factually wrong, end of story.