There is a saying: "United we stand and divided we fall!"
And this has ALWAYS been true of the United States as well. So, though states could secede if Trump doesn't resign soon, it might not be that useful for everyone's safety on earth.
So, we are presently experiencing a chaos level unheard of since world War II and the Great Depression from just Trump's Craziness and insanity. He appears to be destroying everything good and decent about the U.S. in the minds of everyone worldwide including Americans.
So, at a certain point states will have no choice but to secede from the Union unless Trump leaves soon.
The first to go likely would be New York, California, Oregon and Washington.
By the way, California all by itself is the 5th larges economy on earth even bigger than the UK.
So, this would be a very big blow to the U.S. if California felt forced to secede caused by Trump's insanity.
California now the world's 5th largest economy, beating out the UK
May 5, 2018 - SACRAMENTO, Calif. – California's economy has surpassed that of the United Kingdomto become the world's fifth largest, according to new federal data made public Friday. California's gross domestic product rose by $127 billion from 2016 to 2017, surpassing $2.7 trillion, the data said.