I know its fun now, but at some point it would become a base of operations for drug cartels or Chicomm invasion. Would be like allowing the Nazis to take control of just one little part of a city in America during WW2. Its tricky only because many of our cities now are seeming to be pledging their allegiance to other countries or philosophies.
If we could trust it would remain completely independent and just bit of fun for us to laugh at the idiot hippies, that would be one thing, but it wouldnt. A vacuum, a failed state, would be taken advantage of as a beachhead for enemy foreign powers. They could then work out in the open on our own soil toward our destruction .
When these meatheads on the West Coast try to secede from the American Union. The States will be California,Oregon,and Washington. They will name their new utopia something like Cascadia, and proclaim it an eco biosphere or some other nonsense.
However there is a bloodless way to stop it. Post WW2 a mountain of capital was invested in education and industry,up and down the West Coast. When that capital leaves so do people. Also historically the Western real estate market has more non resident ownership than the Midwest,Southern,and Eastern regions. We get butchered in those downturns.
Something will have to be done within the next ten years.
China will be licking their chops negotiating with the women and girly men politicians out here.