They'd be okay with a Civil War if they don't start it because there's a chance they can gain more power and remove their enemies. If they are responding to aggressors, they have the chance to be even more ruthless. After they squash the rebellion, the Constitution would be dead to avoid any further rebellions.
There's huge pluses if they win and aren't the aggressors.
I understand what you're getting at, but I disagree.
They currently have absolute power. By starting a Civil War, they have little to gain and much to lose.
If we stay on our current path heading into the future (a demoralized White populace without any major conflicts), we lose. If there's a Civil War and they win, we lose (but faster). If there's a Civil War and we win, they are no longer in power.
A CW is the only thing that jeopardizes their power. They do not want their power being jeopardized. They have consolidated Power for the past 100 years. They can afford to wait a bit longer.
Additionally, the Constitution is already dead.
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