I say let's see how much they like being a separate nation for real...
Seattle should cut off all utilities to the area, sewer, water, electric, etc., until CHAZ negotiates cross border trade agreements on how much they'll pay to continue to receive these services from US providers-- unless that is, they want to provide their own.
I bet being a Third World country with no indoor plumbing, no running water, no electricity, no internet or phone service, will make the fun go away PDQ. The sort of Lefties leading this rebellion haven't got a clue about how any of that stuff works. You can take that to the bank. When they can't get their mocha latte because there's no water or electricity they'll decide that maybe they need to rethink their plan...