@dl46g his reason would be to avoid a civil war.
Despite what social media and movies portray, war is not pretty, particularly civil war. Read biographies from people who lived through the first American Civil War.
We would lose our position as the leader of the free world. Our economy would be fucked. People would starve, murder, and steal regularly.
Have no doubt that this event will lead to political change. But it doesn't require war.
We have already lost our position as leader of the free world with this dubious, obviously fraudulent election.
China is the only superpower now.