[BroJoeK]

DiogenesLamp: "The rule seems to be [from DOI]:

"...whenever any Form of Government becomes destructive of these ends, it is the Right of the People to alter or to abolish it, and to institute new Government..."

The key word here being "destructive" which along with "necessary" is fully defined in the DOI's listing of some two dozen specifics.
Not even one of those specific conditions existed in 1860 to justify Fire Eaters' declarations of secession at pleasure.

[DiogenesLamp]

Not going to give your insistence on “necessity” any consideration what so ever. I’ve already shown you that New York clearly regarded the choice to leave as up to the people, and so did Virginia.