Let’s see...
Barksdale AFB Louisiana, 50+ B-52s; Knoxville, Tennessee Nuclear Labs; Kings Bay Naval Ballistic Submarine Base, Georgia. And of course, more than 75% of the active duty military from the South and in the various big bases used because the South has better weather for training, cheaper housing, etc.
Nope, don’t think so.
Better plan: expel L.A. to Seattle coast. Force Canada to take them. Keep S.Diego
Expel Maryland to Maine coast. => Canada.
Annex northern Mexico, which is industrialized
Ban NY & L.A. media from broadcasting back into USA
You don’t think that those B52s, ships, subs and troops would be ordered out before the brakeup